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Finding the Fourth Proportional to 625.16, 938.10 and 235.43

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Solution

The fourth proportional to 625.16, 938.10 and 235.43 is: 353.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.16 : 938.10 = 235.43 : x
  2. Step 2: Convert to fraction form
    625.16/938.10 = 235.43/x
  3. Step 3: Cross multiply
    625.16x = 938.10 × 235.43
  4. Step 4: Simplify right side
    625.16x = 220,856.88
  5. Step 5: Solve for x
    x = 220,856.88/625.16
  6. Step 6: Final answer
    x = 353.28

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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.