BXD' 125. A PROPORTION is an equality of ratios. Four magnitudes are in proportion, when the ratio of the first to the second is the same as that of the third to the fourth. Dictionary of Scientific Terms - Page 261by P. Austin Nuttall - 1869 - 325 pagesFull view - About this book
| 1801 - 444 pages
...geometrical proportion ; for •£-= '•£ — 2, but \- = 8. Four numbers are directly proportional, **when the ratio of the first to the second is the same as that of the third to** die fourth. As 2 : 4 : : 3 : 6. Four numbers are said to be recipri*ally or inversely proportional,... | |
| Samuel Webber - 1808 - 466 pages
...discontinued geometrical proportion ; for | 1T6 =2, but y =8. Four numbers are directly proportional, **when the ratio of the first to the second is the same, as that of the third to the fourth. As** 2 : 4 : : 3 : 6. Four numbers are said to be reciprocally or inversely proportional, when the first... | |
| C T. Watkins - 1810 - 1056 pages
...antecedent. Ь5. Three ma«ni;udes or quantities, Л. B,C,are said to be proportional, wnen the ratio ot **the first to the second is the same as that of the** second to the third. Thu», ?, 4., 8. зге proportiunal ; because Л is contained in b li many times... | |
| Samuel Webber - 1812 - 266 pages
...discontinued geometrical proportion ; for £=y=2, but *^=8. Four numbers are directly proportional, **when the ratio of the first to the second is the same, as that of the third to the fourth. As** 2 : 4 : : 3 : 6. Four numbers are said to be reciprocally, or inversely proportional, when the first... | |
| Charles Hutton - 1812 - 622 pages
...(4), c (8), where .J ;= | = 2, both the same ratio. 79. Four quantities are said to be Proportional, **when the ratio of the first to the second, is the same as** the ratio cf the third to the fourth. As of the four, A (2), B (4), c (5), D (10), where .* = '.j°—... | |
| Beriah Stevens - 1822 - 434 pages
...division of the wntecedent 1, by the consequent 2, viz. i. Four numbers are siiid to be proportional **when the ratio of the first to the second is the same as that of the** tliii'd to the fourth ; and the proportional numbers are usually distinguished from one another, as... | |
| John Imison - 1822 - 488 pages
...consequent by the antecedent. 54. Three magnitudes or quantities, A,B,C, are said to be proportional, **when the ratio of the first to the second is the same as that of the** second to the third. Thus, 2, 4, 8, are proportional, because 4> is contained in 8 as many times as... | |
| Charles Hutton - 1822 - 616 pages
...B (4), c (8), where f =f =5, both the same ratio. 79. Four quantities are said to be Proportional, **when the ratio of the first to the second, is the same as** the ratio of the third to the fourth. As of the four, A (2), B (4), c (5), p (10), where 5=»/r=i,... | |
| John Penrose (teacher of arithmetic.) - 1824 - 320 pages
...of 9 to 12. Proportion consists of three terms at least. Three numbers are said to be proportional, **when the ratio of the first to the second, is the same as-** the ratio of the second to the fourth; as 2, 4,8, where -}=£=2, both the same ratio, for 4 is as much... | |
| John Nicholson (civil engineer.) - 1825 - 1008 pages
...consequent by the antecedent. 89. Three magnitudes or quantities, A, 11, (.', are said to be proportional, **when the ratio of the first to the second is the same as that of the** second to the third. Thus, 2, 4, 8, are proportional, because 4 is contained in 8 as many times as... | |
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