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Finding the Fourth Proportional to 240.66, 331.76 and 203.74

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Solution

The fourth proportional to 240.66, 331.76 and 203.74 is: 280.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.66 : 331.76 = 203.74 : x
  2. Step 2: Convert to fraction form
    240.66/331.76 = 203.74/x
  3. Step 3: Cross multiply
    240.66x = 331.76 × 203.74
  4. Step 4: Simplify right side
    240.66x = 67,592.46
  5. Step 5: Solve for x
    x = 67,592.46/240.66
  6. Step 6: Final answer
    x = 280.86

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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.