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Finding the Fourth Proportional to 240.66, 331.96 and 147.40

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Solution

The fourth proportional to 240.66, 331.96 and 147.40 is: 203.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.66 : 331.96 = 147.40 : x
  2. Step 2: Convert to fraction form
    240.66/331.96 = 147.40/x
  3. Step 3: Cross multiply
    240.66x = 331.96 × 147.40
  4. Step 4: Simplify right side
    240.66x = 48,930.90
  5. Step 5: Solve for x
    x = 48,930.90/240.66
  6. Step 6: Final answer
    x = 203.32

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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.