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Finding the Fourth Proportional to 1,000.92, 1,381.22 and 752.04

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Solution

The fourth proportional to 1,000.92, 1,381.22 and 752.04 is: 1,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,000.92 : 1,381.22 = 752.04 : x
  2. Step 2: Convert to fraction form
    1,000.92/1,381.22 = 752.04/x
  3. Step 3: Cross multiply
    1,000.92x = 1,381.22 × 752.04
  4. Step 4: Simplify right side
    1,000.92x = 1,038,732.69
  5. Step 5: Solve for x
    x = 1,038,732.69/1,000.92
  6. Step 6: Final answer
    x = 1,037.78

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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.