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Finding the Fourth Proportional to 371.88, 512.90 and 240.66

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Solution

The fourth proportional to 371.88, 512.90 and 240.66 is: 331.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.88 : 512.90 = 240.66 : x
  2. Step 2: Convert to fraction form
    371.88/512.90 = 240.66/x
  3. Step 3: Cross multiply
    371.88x = 512.90 × 240.66
  4. Step 4: Simplify right side
    371.88x = 123,434.21
  5. Step 5: Solve for x
    x = 123,434.21/371.88
  6. Step 6: Final answer
    x = 331.92

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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.