ratio and proportion

Ratio: If a and b are two quantities with the same units such that b is not equal to zero; then the quotient a/b is called the ratio between a and b. It is written as a:b. Ratio does not have any unit. The quantities a and b are called terms of the ratio..

Introduction - This chapter takes us much further and adds to our already existing knowledge about Ratio and Proportion. We will have to use many of the algebraic manipulations learnt earlier, use them with expertise to solve problems in this chapt..

Summary - Ratio is the numerical relationship between two quantities of the same kind. The first quantity is called the antecedent and the second quantity is called the consequent. By performing simple operations on ratios, we get compounded ratio, duplicate ratio..

Ratio and Proportion II..

..

Determine which pair of ratios forms a proportion. => 8 14 , 3 17 or 4 13 , 2 7 or 3 7 , 12 19 or 2.5 10 , 4 16..

Determine the pair of ratios which forms a proportion. => 7.5 10 , 18 24 or 7 5 , 20 34 or 1 3 , 5 11 or 2.5 10 , 2 17..

Determine which two ratios form a proportion. => 9 5 , 200 340 or 2 3 , 7 12 or 2.5 10 , 3 12 or 5 7 , 30 46..

Check which of the two ratios do not form a proportion. => 2 4 , 12 24 or 9 27 , 15 45 or 7 5 , 10 17 or 4 16 , 5 20..

The ratio of the perimeters of two similar triangles is proportional to the ratio of their ________. => sides or square of areas or areas or square of corresponding sides..