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Finding the Fourth Proportional to 173.44, 239.52 and 138.88

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Solution

The fourth proportional to 173.44, 239.52 and 138.88 is: 191.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.44 : 239.52 = 138.88 : x
  2. Step 2: Convert to fraction form
    173.44/239.52 = 138.88/x
  3. Step 3: Cross multiply
    173.44x = 239.52 × 138.88
  4. Step 4: Simplify right side
    173.44x = 33,264.54
  5. Step 5: Solve for x
    x = 33,264.54/173.44
  6. Step 6: Final answer
    x = 191.79

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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.