Finding the Fourth Proportional to 331.77, 457.73 and 198.99
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Solution
The fourth proportional to 331.77, 457.73 and 198.99 is: 274.54
Step by Step Solution
- Step 1: Write the proportion equation
331.77 : 457.73 = 198.99 : x - Step 2: Convert to fraction form
331.77/457.73 = 198.99/x - Step 3: Cross multiply
331.77x = 457.73 × 198.99 - Step 4: Simplify right side
331.77x = 91,082.70 - Step 5: Solve for x
x = 91,082.70/331.77 - Step 6: Final answer
x = 274.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.