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Solve proportions260

Solve proportions260 When two ratios are equal, they are said to be in proportion.To verify whether two ratios are in proportion, we simplify the two ratios first and then we determine whether they are equal or not. If both the simplified ratios are equal, they are said to be in proportion. If the simplified ratios are not equal, then the ratios are not in proportion. We use the symbols " :: " or " = " to denote a proportion.Consider two ratios in proportion, ab = cd , ( a:b :: c:d). Here, we have a x d = c x d.

In a statement of proportion, the first and fourth terms are known as extreme terms and the second and third terms are known as middle terms. Thus, if two ratios are in proportion, the product of the extreme terms = product of the middle terms.

 

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Uploaded on December 23, 2011
Taken on December 22, 2011