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Finding the Fourth Proportional to 338.88, 467.40 and 240.60

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Solution

The fourth proportional to 338.88, 467.40 and 240.60 is: 331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.88 : 467.40 = 240.60 : x
  2. Step 2: Convert to fraction form
    338.88/467.40 = 240.60/x
  3. Step 3: Cross multiply
    338.88x = 467.40 × 240.60
  4. Step 4: Simplify right side
    338.88x = 112,456.44
  5. Step 5: Solve for x
    x = 112,456.44/338.88
  6. Step 6: Final answer
    x = 331.85

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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.