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Finding the Fourth Proportional to 167.98, 231.56 and 126.53

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Solution

The fourth proportional to 167.98, 231.56 and 126.53 is: 174.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.98 : 231.56 = 126.53 : x
  2. Step 2: Convert to fraction form
    167.98/231.56 = 126.53/x
  3. Step 3: Cross multiply
    167.98x = 231.56 × 126.53
  4. Step 4: Simplify right side
    167.98x = 29,299.29
  5. Step 5: Solve for x
    x = 29,299.29/167.98
  6. Step 6: Final answer
    x = 174.42

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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.