Finding the Fourth Proportional to 252.11, 378.08 and 87.54
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Solution
The fourth proportional to 252.11, 378.08 and 87.54 is: 131.28
Step by Step Solution
- Step 1: Write the proportion equation
252.11 : 378.08 = 87.54 : x - Step 2: Convert to fraction form
252.11/378.08 = 87.54/x - Step 3: Cross multiply
252.11x = 378.08 × 87.54 - Step 4: Simplify right side
252.11x = 33,096.69 - Step 5: Solve for x
x = 33,096.69/252.11 - Step 6: Final answer
x = 131.28
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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.