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Finding the Fourth Proportional to 268.67, 371.03 and 222.20

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Solution

The fourth proportional to 268.67, 371.03 and 222.20 is: 306.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.67 : 371.03 = 222.20 : x
  2. Step 2: Convert to fraction form
    268.67/371.03 = 222.20/x
  3. Step 3: Cross multiply
    268.67x = 371.03 × 222.20
  4. Step 4: Simplify right side
    268.67x = 82,439.90
  5. Step 5: Solve for x
    x = 82,439.90/268.67
  6. Step 6: Final answer
    x = 306.85

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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.