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Finding the Fourth Proportional to 167.07, 251.11 and 138.37

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Solution

The fourth proportional to 167.07, 251.11 and 138.37 is: 207.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.07 : 251.11 = 138.37 : x
  2. Step 2: Convert to fraction form
    167.07/251.11 = 138.37/x
  3. Step 3: Cross multiply
    167.07x = 251.11 × 138.37
  4. Step 4: Simplify right side
    167.07x = 34,744.77
  5. Step 5: Solve for x
    x = 34,744.77/167.07
  6. Step 6: Final answer
    x = 207.97

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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.