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Finding the Fourth Proportional to 539.43, 744.50 and 329.73

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Solution

The fourth proportional to 539.43, 744.50 and 329.73 is: 455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.43 : 744.50 = 329.73 : x
  2. Step 2: Convert to fraction form
    539.43/744.50 = 329.73/x
  3. Step 3: Cross multiply
    539.43x = 744.50 × 329.73
  4. Step 4: Simplify right side
    539.43x = 245,483.57
  5. Step 5: Solve for x
    x = 245,483.57/539.43
  6. Step 6: Final answer
    x = 455.08

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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.