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Finding the Fourth Proportional to 240.00, 331.19 and 161.47

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Solution

The fourth proportional to 240.00, 331.19 and 161.47 is: 222.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.00 : 331.19 = 161.47 : x
  2. Step 2: Convert to fraction form
    240.00/331.19 = 161.47/x
  3. Step 3: Cross multiply
    240.00x = 331.19 × 161.47
  4. Step 4: Simplify right side
    240.00x = 53,476.44
  5. Step 5: Solve for x
    x = 53,476.44/240.00
  6. Step 6: Final answer
    x = 222.82

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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.