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Finding the Fourth Proportional to 268.22, 371.85 and 254.34

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Solution

The fourth proportional to 268.22, 371.85 and 254.34 is: 352.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.22 : 371.85 = 254.34 : x
  2. Step 2: Convert to fraction form
    268.22/371.85 = 254.34/x
  3. Step 3: Cross multiply
    268.22x = 371.85 × 254.34
  4. Step 4: Simplify right side
    268.22x = 94,576.33
  5. Step 5: Solve for x
    x = 94,576.33/268.22
  6. Step 6: Final answer
    x = 352.61

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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.