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Finding the Fourth Proportional to 539.28, 739.36 and 529.56

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Solution

The fourth proportional to 539.28, 739.36 and 529.56 is: 726.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.28 : 739.36 = 529.56 : x
  2. Step 2: Convert to fraction form
    539.28/739.36 = 529.56/x
  3. Step 3: Cross multiply
    539.28x = 739.36 × 529.56
  4. Step 4: Simplify right side
    539.28x = 391,535.48
  5. Step 5: Solve for x
    x = 391,535.48/539.28
  6. Step 6: Final answer
    x = 726.03

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.