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Finding the Fourth Proportional to 625.62, 938.36 and 235.55

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Solution

The fourth proportional to 625.62, 938.36 and 235.55 is: 353.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.62 : 938.36 = 235.55 : x
  2. Step 2: Convert to fraction form
    625.62/938.36 = 235.55/x
  3. Step 3: Cross multiply
    625.62x = 938.36 × 235.55
  4. Step 4: Simplify right side
    625.62x = 221,024.83
  5. Step 5: Solve for x
    x = 221,024.83/625.62
  6. Step 6: Final answer
    x = 353.29

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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.