Finding the Fourth Proportional to 252.85, 378.97 and 115.71
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Solution
The fourth proportional to 252.85, 378.97 and 115.71 is: 173.42
Step by Step Solution
- Step 1: Write the proportion equation
252.85 : 378.97 = 115.71 : x - Step 2: Convert to fraction form
252.85/378.97 = 115.71/x - Step 3: Cross multiply
252.85x = 378.97 × 115.71 - Step 4: Simplify right side
252.85x = 43,849.23 - Step 5: Solve for x
x = 43,849.23/252.85 - Step 6: Final answer
x = 173.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.