The fourth proportional of 10, 15 and 30 is:
45
The correct answer is 45.
Here, $b$ is called the mean proportional between $a$ and $c$. The relationship is $b^2 = ac$. Applications: Proportions are used in everyday life for scaling recipes, mixing ingredients, calculating speeds, converting currencies, and in various scientific calculations. Solving Problems: Many word problems can be translated into proportions and solved using cross-multiplication or by finding a common ratio multiplier.
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Important Questions from Fourth Proportional
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