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Finding the Fourth Proportional to 173.76, 258.78 and 161.88

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Solution

The fourth proportional to 173.76, 258.78 and 161.88 is: 241.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.76 : 258.78 = 161.88 : x
  2. Step 2: Convert to fraction form
    173.76/258.78 = 161.88/x
  3. Step 3: Cross multiply
    173.76x = 258.78 × 161.88
  4. Step 4: Simplify right side
    173.76x = 41,891.31
  5. Step 5: Solve for x
    x = 41,891.31/173.76
  6. Step 6: Final answer
    x = 241.09

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.