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Finding the Fourth Proportional to 937.56, 1,293.91 and 517.96

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Solution

The fourth proportional to 937.56, 1,293.91 and 517.96 is: 714.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.56 : 1,293.91 = 517.96 : x
  2. Step 2: Convert to fraction form
    937.56/1,293.91 = 517.96/x
  3. Step 3: Cross multiply
    937.56x = 1,293.91 × 517.96
  4. Step 4: Simplify right side
    937.56x = 670,193.95
  5. Step 5: Solve for x
    x = 670,193.95/937.56
  6. Step 6: Final answer
    x = 714.83

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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.