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Finding the Fourth Proportional to 167.13, 250.71 and 45.39

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Solution

The fourth proportional to 167.13, 250.71 and 45.39 is: 68.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.13 : 250.71 = 45.39 : x
  2. Step 2: Convert to fraction form
    167.13/250.71 = 45.39/x
  3. Step 3: Cross multiply
    167.13x = 250.71 × 45.39
  4. Step 4: Simplify right side
    167.13x = 11,379.73
  5. Step 5: Solve for x
    x = 11,379.73/167.13
  6. Step 6: Final answer
    x = 68.09

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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.