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Finding the Fourth Proportional to 800.97, 1,105.86 and 517.52

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Solution

The fourth proportional to 800.97, 1,105.86 and 517.52 is: 714.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.97 : 1,105.86 = 517.52 : x
  2. Step 2: Convert to fraction form
    800.97/1,105.86 = 517.52/x
  3. Step 3: Cross multiply
    800.97x = 1,105.86 × 517.52
  4. Step 4: Simplify right side
    800.97x = 572,304.67
  5. Step 5: Solve for x
    x = 572,304.67/800.97
  6. Step 6: Final answer
    x = 714.51

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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.