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Finding the Fourth Proportional to 539.12, 743.99 and 329.27

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Solution

The fourth proportional to 539.12, 743.99 and 329.27 is: 454.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.12 : 743.99 = 329.27 : x
  2. Step 2: Convert to fraction form
    539.12/743.99 = 329.27/x
  3. Step 3: Cross multiply
    539.12x = 743.99 × 329.27
  4. Step 4: Simplify right side
    539.12x = 244,973.59
  5. Step 5: Solve for x
    x = 244,973.59/539.12
  6. Step 6: Final answer
    x = 454.40

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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.