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Finding the Fourth Proportional to 240.67, 331.79 and 205.55

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Solution

The fourth proportional to 240.67, 331.79 and 205.55 is: 283.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.67 : 331.79 = 205.55 : x
  2. Step 2: Convert to fraction form
    240.67/331.79 = 205.55/x
  3. Step 3: Cross multiply
    240.67x = 331.79 × 205.55
  4. Step 4: Simplify right side
    240.67x = 68,197.78
  5. Step 5: Solve for x
    x = 68,197.78/240.67
  6. Step 6: Final answer
    x = 283.37

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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.