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Finding the Fourth Proportional to 167.07, 250.50 and 80.43

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Solution

The fourth proportional to 167.07, 250.50 and 80.43 is: 120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.07 : 250.50 = 80.43 : x
  2. Step 2: Convert to fraction form
    167.07/250.50 = 80.43/x
  3. Step 3: Cross multiply
    167.07x = 250.50 × 80.43
  4. Step 4: Simplify right side
    167.07x = 20,147.72
  5. Step 5: Solve for x
    x = 20,147.72/167.07
  6. Step 6: Final answer
    x = 120.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.