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Finding the Fourth Proportional to 625.34, 938.40 and 351.61

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Solution

The fourth proportional to 625.34, 938.40 and 351.61 is: 527.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.34 : 938.40 = 351.61 : x
  2. Step 2: Convert to fraction form
    625.34/938.40 = 351.61/x
  3. Step 3: Cross multiply
    625.34x = 938.40 × 351.61
  4. Step 4: Simplify right side
    625.34x = 329,950.82
  5. Step 5: Solve for x
    x = 329,950.82/625.34
  6. Step 6: Final answer
    x = 527.63

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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.