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Finding the Fourth Proportional to 226.85, 340.13 and 80.53

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Solution

The fourth proportional to 226.85, 340.13 and 80.53 is: 120.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.85 : 340.13 = 80.53 : x
  2. Step 2: Convert to fraction form
    226.85/340.13 = 80.53/x
  3. Step 3: Cross multiply
    226.85x = 340.13 × 80.53
  4. Step 4: Simplify right side
    226.85x = 27,390.02
  5. Step 5: Solve for x
    x = 27,390.02/226.85
  6. Step 6: Final answer
    x = 120.74

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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.