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Finding the Fourth Proportional to 268.88, 371.09 and 203.27

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Solution

The fourth proportional to 268.88, 371.09 and 203.27 is: 280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.88 : 371.09 = 203.27 : x
  2. Step 2: Convert to fraction form
    268.88/371.09 = 203.27/x
  3. Step 3: Cross multiply
    268.88x = 371.09 × 203.27
  4. Step 4: Simplify right side
    268.88x = 75,430.12
  5. Step 5: Solve for x
    x = 75,430.12/268.88
  6. Step 6: Final answer
    x = 280.54

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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.