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Finding the Fourth Proportional to 539.04, 742.24 and 451.56

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Solution

The fourth proportional to 539.04, 742.24 and 451.56 is: 621.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.04 : 742.24 = 451.56 : x
  2. Step 2: Convert to fraction form
    539.04/742.24 = 451.56/x
  3. Step 3: Cross multiply
    539.04x = 742.24 × 451.56
  4. Step 4: Simplify right side
    539.04x = 335,165.89
  5. Step 5: Solve for x
    x = 335,165.89/539.04
  6. Step 6: Final answer
    x = 621.78

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1.5x scale

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.