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Finding the Fourth Proportional to 937.46, 1,293.67 and 517.79

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Solution

The fourth proportional to 937.46, 1,293.67 and 517.79 is: 714.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.46 : 1,293.67 = 517.79 : x
  2. Step 2: Convert to fraction form
    937.46/1,293.67 = 517.79/x
  3. Step 3: Cross multiply
    937.46x = 1,293.67 × 517.79
  4. Step 4: Simplify right side
    937.46x = 669,849.39
  5. Step 5: Solve for x
    x = 669,849.39/937.46
  6. Step 6: Final answer
    x = 714.54

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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.