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Finding the Fourth Proportional to 238.56, 329.36 and 161.04

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Solution

The fourth proportional to 238.56, 329.36 and 161.04 is: 222.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.56 : 329.36 = 161.04 : x
  2. Step 2: Convert to fraction form
    238.56/329.36 = 161.04/x
  3. Step 3: Cross multiply
    238.56x = 329.36 × 161.04
  4. Step 4: Simplify right side
    238.56x = 53,040.13
  5. Step 5: Solve for x
    x = 53,040.13/238.56
  6. Step 6: Final answer
    x = 222.33

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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.