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Finding the Fourth Proportional to 539.23, 744.11 and 329.75

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Solution

The fourth proportional to 539.23, 744.11 and 329.75 is: 455.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.23 : 744.11 = 329.75 : x
  2. Step 2: Convert to fraction form
    539.23/744.11 = 329.75/x
  3. Step 3: Cross multiply
    539.23x = 744.11 × 329.75
  4. Step 4: Simplify right side
    539.23x = 245,370.27
  5. Step 5: Solve for x
    x = 245,370.27/539.23
  6. Step 6: Final answer
    x = 455.04

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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.