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Finding the Fourth Proportional to 331.54, 496.38 and 250.72

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Solution

The fourth proportional to 331.54, 496.38 and 250.72 is: 375.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.54 : 496.38 = 250.72 : x
  2. Step 2: Convert to fraction form
    331.54/496.38 = 250.72/x
  3. Step 3: Cross multiply
    331.54x = 496.38 × 250.72
  4. Step 4: Simplify right side
    331.54x = 124,452.39
  5. Step 5: Solve for x
    x = 124,452.39/331.54
  6. Step 6: Final answer
    x = 375.38

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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.