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Finding the Fourth Proportional to 254.12, 352.60 and 243.83

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Solution

The fourth proportional to 254.12, 352.60 and 243.83 is: 338.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    254.12 : 352.60 = 243.83 : x
  2. Step 2: Convert to fraction form
    254.12/352.60 = 243.83/x
  3. Step 3: Cross multiply
    254.12x = 352.60 × 243.83
  4. Step 4: Simplify right side
    254.12x = 85,974.73
  5. Step 5: Solve for x
    x = 85,974.73/254.12
  6. Step 6: Final answer
    x = 338.33

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.