Finding the Fourth Proportional to 390.52, 585.82 and 134.04
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Solution
The fourth proportional to 390.52, 585.82 and 134.04 is: 201.07
Step by Step Solution
- Step 1: Write the proportion equation
390.52 : 585.82 = 134.04 : x - Step 2: Convert to fraction form
390.52/585.82 = 134.04/x - Step 3: Cross multiply
390.52x = 585.82 × 134.04 - Step 4: Simplify right side
390.52x = 78,523.31 - Step 5: Solve for x
x = 78,523.31/390.52 - Step 6: Final answer
x = 201.07
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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.