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Finding the Fourth Proportional to 625.92, 938.70 and 187.16

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Solution

The fourth proportional to 625.92, 938.70 and 187.16 is: 280.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.92 : 938.70 = 187.16 : x
  2. Step 2: Convert to fraction form
    625.92/938.70 = 187.16/x
  3. Step 3: Cross multiply
    625.92x = 938.70 × 187.16
  4. Step 4: Simplify right side
    625.92x = 175,682.40
  5. Step 5: Solve for x
    x = 175,682.40/625.92
  6. Step 6: Final answer
    x = 280.68

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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.