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Finding the Fourth Proportional to 240.09, 331.17 and 170.25

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Solution

The fourth proportional to 240.09, 331.17 and 170.25 is: 234.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.09 : 331.17 = 170.25 : x
  2. Step 2: Convert to fraction form
    240.09/331.17 = 170.25/x
  3. Step 3: Cross multiply
    240.09x = 331.17 × 170.25
  4. Step 4: Simplify right side
    240.09x = 56,381.69
  5. Step 5: Solve for x
    x = 56,381.69/240.09
  6. Step 6: Final answer
    x = 234.84

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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.