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Finding the Fourth Proportional to 937.39, 1,293.57 and 539.05

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Solution

The fourth proportional to 937.39, 1,293.57 and 539.05 is: 743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.39 : 1,293.57 = 539.05 : x
  2. Step 2: Convert to fraction form
    937.39/1,293.57 = 539.05/x
  3. Step 3: Cross multiply
    937.39x = 1,293.57 × 539.05
  4. Step 4: Simplify right side
    937.39x = 697,298.91
  5. Step 5: Solve for x
    x = 697,298.91/937.39
  6. Step 6: Final answer
    x = 743.87

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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.