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Finding the Fourth Proportional to 625.97, 938.05 and 443.72

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Solution

The fourth proportional to 625.97, 938.05 and 443.72 is: 664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    625.97 : 938.05 = 443.72 : x
  2. Step 2: Convert to fraction form
    625.97/938.05 = 443.72/x
  3. Step 3: Cross multiply
    625.97x = 938.05 × 443.72
  4. Step 4: Simplify right side
    625.97x = 416,232.78
  5. Step 5: Solve for x
    x = 416,232.78/625.97
  6. Step 6: Final answer
    x = 664.94

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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.