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Finding the Fourth Proportional to 539.45, 744.36 and 329.57

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Solution

The fourth proportional to 539.45, 744.36 and 329.57 is: 454.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.45 : 744.36 = 329.57 : x
  2. Step 2: Convert to fraction form
    539.45/744.36 = 329.57/x
  3. Step 3: Cross multiply
    539.45x = 744.36 × 329.57
  4. Step 4: Simplify right side
    539.45x = 245,318.73
  5. Step 5: Solve for x
    x = 245,318.73/539.45
  6. Step 6: Final answer
    x = 454.76

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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.