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Finding the Fourth Proportional to 226.65, 313.22 and 167.72

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Solution

The fourth proportional to 226.65, 313.22 and 167.72 is: 231.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.65 : 313.22 = 167.72 : x
  2. Step 2: Convert to fraction form
    226.65/313.22 = 167.72/x
  3. Step 3: Cross multiply
    226.65x = 313.22 × 167.72
  4. Step 4: Simplify right side
    226.65x = 52,532.93
  5. Step 5: Solve for x
    x = 52,532.93/226.65
  6. Step 6: Final answer
    x = 231.78

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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.