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Finding the Fourth Proportional to 227.26, 313.77 and 161.65

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Solution

The fourth proportional to 227.26, 313.77 and 161.65 is: 223.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.26 : 313.77 = 161.65 : x
  2. Step 2: Convert to fraction form
    227.26/313.77 = 161.65/x
  3. Step 3: Cross multiply
    227.26x = 313.77 × 161.65
  4. Step 4: Simplify right side
    227.26x = 50,720.92
  5. Step 5: Solve for x
    x = 50,720.92/227.26
  6. Step 6: Final answer
    x = 223.18

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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.