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Finding the Fourth Proportional to 167.38, 249.90 and 157.08

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Solution

The fourth proportional to 167.38, 249.90 and 157.08 is: 234.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.38 : 249.90 = 157.08 : x
  2. Step 2: Convert to fraction form
    167.38/249.90 = 157.08/x
  3. Step 3: Cross multiply
    167.38x = 249.90 × 157.08
  4. Step 4: Simplify right side
    167.38x = 39,254.29
  5. Step 5: Solve for x
    x = 39,254.29/167.38
  6. Step 6: Final answer
    x = 234.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.