Mathematics · Class 6-7

Ratio and Proportion

A ratio compares two quantities by division. A proportion states that two ratios are equal. These concepts are fundamental for comparisons, scaling, a

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Is a ratio the same as a fraction?

A ratio and fraction look similar but have different meanings. A ratio compares two quantities, while a fraction shows part of a whole. Ratio 3:2 compares 3 to 2. Fraction 3/5 shows 3 parts out of 5 total parts.

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Can a ratio have more than two quantities?

Yes, a ratio can compare three or more quantities. For example, a recipe might specify flour:sugar:butter in ratio 4:2:1. This means for every 4 parts flour, use 2 parts sugar and 1 part butter.

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What is the constant of proportionality?

The constant of proportionality is the fixed ratio between two proportional quantities. In y equals kx, k is the constant. It represents the rate of change or the factor by which one quantity changes relative to the other.

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