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Finding the Fourth Proportional to 240.41, 331.68 and 151.86

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Solution

The fourth proportional to 240.41, 331.68 and 151.86 is: 209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.41 : 331.68 = 151.86 : x
  2. Step 2: Convert to fraction form
    240.41/331.68 = 151.86/x
  3. Step 3: Cross multiply
    240.41x = 331.68 × 151.86
  4. Step 4: Simplify right side
    240.41x = 50,368.92
  5. Step 5: Solve for x
    x = 50,368.92/240.41
  6. Step 6: Final answer
    x = 209.51

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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.