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Finding the Fourth Proportional to 226.34, 339.12 and 143.88

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Solution

The fourth proportional to 226.34, 339.12 and 143.88 is: 215.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.34 : 339.12 = 143.88 : x
  2. Step 2: Convert to fraction form
    226.34/339.12 = 143.88/x
  3. Step 3: Cross multiply
    226.34x = 339.12 × 143.88
  4. Step 4: Simplify right side
    226.34x = 48,791.31
  5. Step 5: Solve for x
    x = 48,791.31/226.34
  6. Step 6: Final answer
    x = 215.57

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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.