how to solve ratio and proportion
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Ratio and Proportion Formulas
1. Ratio: The ratio of two quantities a and b in the same units, is the fraction a/b and we write it as a : b.
In the ratio a : b, we call a as the first term or antecedent and b, the second term or consequent.
Rule: The multiplication or division of each term of a ratio by the same non-zero number does not affect the ratio.
2. Proportion: The equality of two ratios is called proportion.
If a : b = c : d, we write a : b :: c : d and we say that a, b, c, d are in proportion.
Here a and d are called extremes, while b and c are called mean terms.
Product of means = Product of extremes.
Thus, a : b :: c : d <=> (b x c) = (a x d)
1. Ratio: The ratio of two quantities a and b in the same units, is the fraction a/b and we write it as a : b.
In the ratio a : b, we call a as the first term or antecedent and b, the second term or consequent.
Rule: The multiplication or division of each term of a ratio by the same non-zero number does not affect the ratio.
2. Proportion: The equality of two ratios is called proportion.
If a : b = c : d, we write a : b :: c : d and we say that a, b, c, d are in proportion.
Here a and d are called extremes, while b and c are called mean terms.
Product of means = Product of extremes.
Thus, a : b :: c : d <=> (b x c) = (a x d)
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how to solve and proportions
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