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Finding the Fourth Proportional to 331.92, 500.94 and 323.28

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Solution

The fourth proportional to 331.92, 500.94 and 323.28 is: 487.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.92 : 500.94 = 323.28 : x
  2. Step 2: Convert to fraction form
    331.92/500.94 = 323.28/x
  3. Step 3: Cross multiply
    331.92x = 500.94 × 323.28
  4. Step 4: Simplify right side
    331.92x = 161,943.88
  5. Step 5: Solve for x
    x = 161,943.88/331.92
  6. Step 6: Final answer
    x = 487.90

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.