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Finding the Fourth Proportional to 227.13, 340.45 and 111.66

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Solution

The fourth proportional to 227.13, 340.45 and 111.66 is: 167.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.13 : 340.45 = 111.66 : x
  2. Step 2: Convert to fraction form
    227.13/340.45 = 111.66/x
  3. Step 3: Cross multiply
    227.13x = 340.45 × 111.66
  4. Step 4: Simplify right side
    227.13x = 38,012.94
  5. Step 5: Solve for x
    x = 38,012.94/227.13
  6. Step 6: Final answer
    x = 167.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.