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Finding the Fourth Proportional to 331.92, 497.94 and 158.58

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Solution

The fourth proportional to 331.92, 497.94 and 158.58 is: 237.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.92 : 497.94 = 158.58 : x
  2. Step 2: Convert to fraction form
    331.92/497.94 = 158.58/x
  3. Step 3: Cross multiply
    331.92x = 497.94 × 158.58
  4. Step 4: Simplify right side
    331.92x = 78,964.60
  5. Step 5: Solve for x
    x = 78,964.60/331.92
  6. Step 6: Final answer
    x = 237.90

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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.