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Finding the Fourth Proportional to 363.92, 543.12 and 329.48

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Solution

The fourth proportional to 363.92, 543.12 and 329.48 is: 491.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    363.92 : 543.12 = 329.48 : x
  2. Step 2: Convert to fraction form
    363.92/543.12 = 329.48/x
  3. Step 3: Cross multiply
    363.92x = 543.12 × 329.48
  4. Step 4: Simplify right side
    363.92x = 178,947.18
  5. Step 5: Solve for x
    x = 178,947.18/363.92
  6. Step 6: Final answer
    x = 491.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.