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Finding the Fourth Proportional to 240.61, 331.39 and 222.39

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Solution

The fourth proportional to 240.61, 331.39 and 222.39 is: 306.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.61 : 331.39 = 222.39 : x
  2. Step 2: Convert to fraction form
    240.61/331.39 = 222.39/x
  3. Step 3: Cross multiply
    240.61x = 331.39 × 222.39
  4. Step 4: Simplify right side
    240.61x = 73,697.82
  5. Step 5: Solve for x
    x = 73,697.82/240.61
  6. Step 6: Final answer
    x = 306.30

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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.