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Finding the Fourth Proportional to 238.92, 329.38 and 173.48

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Solution

The fourth proportional to 238.92, 329.38 and 173.48 is: 239.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.92 : 329.38 = 173.48 : x
  2. Step 2: Convert to fraction form
    238.92/329.38 = 173.48/x
  3. Step 3: Cross multiply
    238.92x = 329.38 × 173.48
  4. Step 4: Simplify right side
    238.92x = 57,140.84
  5. Step 5: Solve for x
    x = 57,140.84/238.92
  6. Step 6: Final answer
    x = 239.16

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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.