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Finding the Fourth Proportional to 330.97, 495.54 and 249.57

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Solution

The fourth proportional to 330.97, 495.54 and 249.57 is: 373.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.97 : 495.54 = 249.57 : x
  2. Step 2: Convert to fraction form
    330.97/495.54 = 249.57/x
  3. Step 3: Cross multiply
    330.97x = 495.54 × 249.57
  4. Step 4: Simplify right side
    330.97x = 123,669.44
  5. Step 5: Solve for x
    x = 123,669.44/330.97
  6. Step 6: Final answer
    x = 373.66

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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.