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Finding the Fourth Proportional to 240.89, 361.98 and 131.28

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Solution

The fourth proportional to 240.89, 361.98 and 131.28 is: 197.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.89 : 361.98 = 131.28 : x
  2. Step 2: Convert to fraction form
    240.89/361.98 = 131.28/x
  3. Step 3: Cross multiply
    240.89x = 361.98 × 131.28
  4. Step 4: Simplify right side
    240.89x = 47,520.73
  5. Step 5: Solve for x
    x = 47,520.73/240.89
  6. Step 6: Final answer
    x = 197.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.