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Finding the Fourth Proportional to 331.92, 497.94 and 149.22

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Solution

The fourth proportional to 331.92, 497.94 and 149.22 is: 223.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.92 : 497.94 = 149.22 : x
  2. Step 2: Convert to fraction form
    331.92/497.94 = 149.22/x
  3. Step 3: Cross multiply
    331.92x = 497.94 × 149.22
  4. Step 4: Simplify right side
    331.92x = 74,302.61
  5. Step 5: Solve for x
    x = 74,302.61/331.92
  6. Step 6: Final answer
    x = 223.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.