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Finding the Fourth Proportional to 937.52, 1,293.78 and 517.88

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Solution

The fourth proportional to 937.52, 1,293.78 and 517.88 is: 714.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.52 : 1,293.78 = 517.88 : x
  2. Step 2: Convert to fraction form
    937.52/1,293.78 = 517.88/x
  3. Step 3: Cross multiply
    937.52x = 1,293.78 × 517.88
  4. Step 4: Simplify right side
    937.52x = 670,022.79
  5. Step 5: Solve for x
    x = 670,022.79/937.52
  6. Step 6: Final answer
    x = 714.68

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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.