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Finding the Fourth Proportional to 331.76, 457.72 and 249.04

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Solution

The fourth proportional to 331.76, 457.72 and 249.04 is: 343.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.76 : 457.72 = 249.04 : x
  2. Step 2: Convert to fraction form
    331.76/457.72 = 249.04/x
  3. Step 3: Cross multiply
    331.76x = 457.72 × 249.04
  4. Step 4: Simplify right side
    331.76x = 113,990.59
  5. Step 5: Solve for x
    x = 113,990.59/331.76
  6. Step 6: Final answer
    x = 343.59

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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.