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Finding the Fourth Proportional to 240.36, 331.75 and 196.39

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Solution

The fourth proportional to 240.36, 331.75 and 196.39 is: 271.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.36 : 331.75 = 196.39 : x
  2. Step 2: Convert to fraction form
    240.36/331.75 = 196.39/x
  3. Step 3: Cross multiply
    240.36x = 331.75 × 196.39
  4. Step 4: Simplify right side
    240.36x = 65,152.38
  5. Step 5: Solve for x
    x = 65,152.38/240.36
  6. Step 6: Final answer
    x = 271.06

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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.