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Finding the Fourth Proportional to 266.72, 402.08 and 252.56

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Solution

The fourth proportional to 266.72, 402.08 and 252.56 is: 380.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.72 : 402.08 = 252.56 : x
  2. Step 2: Convert to fraction form
    266.72/402.08 = 252.56/x
  3. Step 3: Cross multiply
    266.72x = 402.08 × 252.56
  4. Step 4: Simplify right side
    266.72x = 101,549.32
  5. Step 5: Solve for x
    x = 101,549.32/266.72
  6. Step 6: Final answer
    x = 380.73

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.