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Finding the Fourth Proportional to 625.73, 938.22 and 291.80

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Solution

The fourth proportional to 625.73, 938.22 and 291.80 is: 437.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.73 : 938.22 = 291.80 : x
  2. Step 2: Convert to fraction form
    625.73/938.22 = 291.80/x
  3. Step 3: Cross multiply
    625.73x = 938.22 × 291.80
  4. Step 4: Simplify right side
    625.73x = 273,773.85
  5. Step 5: Solve for x
    x = 273,773.85/625.73
  6. Step 6: Final answer
    x = 437.53

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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.