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Finding the Fourth Proportional to 371.11, 511.92 and 240.12

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Solution

The fourth proportional to 371.11, 511.92 and 240.12 is: 331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.11 : 511.92 = 240.12 : x
  2. Step 2: Convert to fraction form
    371.11/511.92 = 240.12/x
  3. Step 3: Cross multiply
    371.11x = 511.92 × 240.12
  4. Step 4: Simplify right side
    371.11x = 122,922.23
  5. Step 5: Solve for x
    x = 122,922.23/371.11
  6. Step 6: Final answer
    x = 331.23

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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.