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Finding the Fourth Proportional to 331.19, 496.17 and 254.10

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Solution

The fourth proportional to 331.19, 496.17 and 254.10 is: 380.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.19 : 496.17 = 254.10 : x
  2. Step 2: Convert to fraction form
    331.19/496.17 = 254.10/x
  3. Step 3: Cross multiply
    331.19x = 496.17 × 254.10
  4. Step 4: Simplify right side
    331.19x = 126,076.80
  5. Step 5: Solve for x
    x = 126,076.80/331.19
  6. Step 6: Final answer
    x = 380.68

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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.