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Finding the Fourth Proportional to 275.19, 379.12 and 226.38

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Solution

The fourth proportional to 275.19, 379.12 and 226.38 is: 311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.19 : 379.12 = 226.38 : x
  2. Step 2: Convert to fraction form
    275.19/379.12 = 226.38/x
  3. Step 3: Cross multiply
    275.19x = 379.12 × 226.38
  4. Step 4: Simplify right side
    275.19x = 85,825.19
  5. Step 5: Solve for x
    x = 85,825.19/275.19
  6. Step 6: Final answer
    x = 311.88

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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.