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Finding the Fourth Proportional to 254.43, 379.60 and 230.85

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Solution

The fourth proportional to 254.43, 379.60 and 230.85 is: 344.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.43 : 379.60 = 230.85 : x
  2. Step 2: Convert to fraction form
    254.43/379.60 = 230.85/x
  3. Step 3: Cross multiply
    254.43x = 379.60 × 230.85
  4. Step 4: Simplify right side
    254.43x = 87,630.08
  5. Step 5: Solve for x
    x = 87,630.08/254.43
  6. Step 6: Final answer
    x = 344.42

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.