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Finding the Fourth Proportional to 167.61, 231.34 and 97.68

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Solution

The fourth proportional to 167.61, 231.34 and 97.68 is: 134.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.61 : 231.34 = 97.68 : x
  2. Step 2: Convert to fraction form
    167.61/231.34 = 97.68/x
  3. Step 3: Cross multiply
    167.61x = 231.34 × 97.68
  4. Step 4: Simplify right side
    167.61x = 22,597.05
  5. Step 5: Solve for x
    x = 22,597.05/167.61
  6. Step 6: Final answer
    x = 134.82

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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.