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Finding the Fourth Proportional to 938.04, 1,294.52 and 539.66

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Solution

The fourth proportional to 938.04, 1,294.52 and 539.66 is: 744.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    938.04 : 1,294.52 = 539.66 : x
  2. Step 2: Convert to fraction form
    938.04/1,294.52 = 539.66/x
  3. Step 3: Cross multiply
    938.04x = 1,294.52 × 539.66
  4. Step 4: Simplify right side
    938.04x = 698,600.66
  5. Step 5: Solve for x
    x = 698,600.66/938.04
  6. Step 6: Final answer
    x = 744.75

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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.