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Finding the Fourth Proportional to 625.33, 937.32 and 487.90

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Solution

The fourth proportional to 625.33, 937.32 and 487.90 is: 731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.33 : 937.32 = 487.90 : x
  2. Step 2: Convert to fraction form
    625.33/937.32 = 487.90/x
  3. Step 3: Cross multiply
    625.33x = 937.32 × 487.90
  4. Step 4: Simplify right side
    625.33x = 457,318.43
  5. Step 5: Solve for x
    x = 457,318.43/625.33
  6. Step 6: Final answer
    x = 731.32

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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.