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Finding the Fourth Proportional to 226.13, 312.26 and 167.81

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Solution

The fourth proportional to 226.13, 312.26 and 167.81 is: 231.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.13 : 312.26 = 167.81 : x
  2. Step 2: Convert to fraction form
    226.13/312.26 = 167.81/x
  3. Step 3: Cross multiply
    226.13x = 312.26 × 167.81
  4. Step 4: Simplify right side
    226.13x = 52,397.95
  5. Step 5: Solve for x
    x = 52,397.95/226.13
  6. Step 6: Final answer
    x = 231.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.