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Finding the Fourth Proportional to 173.97, 239.19 and 155.12

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Solution

The fourth proportional to 173.97, 239.19 and 155.12 is: 213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.97 : 239.19 = 155.12 : x
  2. Step 2: Convert to fraction form
    173.97/239.19 = 155.12/x
  3. Step 3: Cross multiply
    173.97x = 239.19 × 155.12
  4. Step 4: Simplify right side
    173.97x = 37,103.15
  5. Step 5: Solve for x
    x = 37,103.15/173.97
  6. Step 6: Final answer
    x = 213.27

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.