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Finding the Fourth Proportional to 932.01, 1,286.17 and 553.92

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Solution

The fourth proportional to 932.01, 1,286.17 and 553.92 is: 764.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.01 : 1,286.17 = 553.92 : x
  2. Step 2: Convert to fraction form
    932.01/1,286.17 = 553.92/x
  3. Step 3: Cross multiply
    932.01x = 1,286.17 × 553.92
  4. Step 4: Simplify right side
    932.01x = 712,433.90
  5. Step 5: Solve for x
    x = 712,433.90/932.01
  6. Step 6: Final answer
    x = 764.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.