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Finding the Fourth Proportional to 268.68, 371.01 and 222.21

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Solution

The fourth proportional to 268.68, 371.01 and 222.21 is: 306.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.68 : 371.01 = 222.21 : x
  2. Step 2: Convert to fraction form
    268.68/371.01 = 222.21/x
  3. Step 3: Cross multiply
    268.68x = 371.01 × 222.21
  4. Step 4: Simplify right side
    268.68x = 82,442.13
  5. Step 5: Solve for x
    x = 82,442.13/268.68
  6. Step 6: Final answer
    x = 306.84

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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.