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Finding the Fourth Proportional to 937.31, 1,293.51 and 539.03

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Solution

The fourth proportional to 937.31, 1,293.51 and 539.03 is: 743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.31 : 1,293.51 = 539.03 : x
  2. Step 2: Convert to fraction form
    937.31/1,293.51 = 539.03/x
  3. Step 3: Cross multiply
    937.31x = 1,293.51 × 539.03
  4. Step 4: Simplify right side
    937.31x = 697,234.23
  5. Step 5: Solve for x
    x = 697,234.23/937.31
  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.