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Finding the Fourth Proportional to 169.40, 252.69 and 167

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Solution

The fourth proportional to 169.40, 252.69 and 167 is: 249.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.40 : 252.69 = 167 : x
  2. Step 2: Convert to fraction form
    169.40/252.69 = 167/x
  3. Step 3: Cross multiply
    169.40x = 252.69 × 167
  4. Step 4: Simplify right side
    169.40x = 42,199.23
  5. Step 5: Solve for x
    x = 42,199.23/169.40
  6. Step 6: Final answer
    x = 249.11

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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.