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Finding the Fourth Proportional to 227.05, 340.41 and 80.72

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Solution

The fourth proportional to 227.05, 340.41 and 80.72 is: 121.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.05 : 340.41 = 80.72 : x
  2. Step 2: Convert to fraction form
    227.05/340.41 = 80.72/x
  3. Step 3: Cross multiply
    227.05x = 340.41 × 80.72
  4. Step 4: Simplify right side
    227.05x = 27,478.75
  5. Step 5: Solve for x
    x = 27,478.75/227.05
  6. Step 6: Final answer
    x = 121.03

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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.