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.
Similar Questions
Find the fourth proportional of (x4 - y4), (x + y) and (x − y), provided x ≠ y.
What is the fourth proportional to the numbers 8, 66 and 112?
Find the fourth proportion of the following numbers.
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Important Questions from Fourth Proportional
Find the fourth proportional of (x4 - y4), (x + y) and (x − y), provided x ≠ y.
What is the fourth proportional to the numbers 8, 66 and 112?
The fourth proportion to 12, 18, 6 is equal to the third proportion to 4, k. What is the value of k?
The fourth proportional to 10, 12, 15 is :
Find the fourth proportion of the following numbers.
\(\frac{1}{3}\) of 18, \(\frac{4}{5}\) of 20, \(\frac{3}{7}\) of 28.
