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Finding the Fourth Proportional to 376.12, 563.62 and 272.80

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Solution

The fourth proportional to 376.12, 563.62 and 272.80 is: 408.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.12 : 563.62 = 272.80 : x
  2. Step 2: Convert to fraction form
    376.12/563.62 = 272.80/x
  3. Step 3: Cross multiply
    376.12x = 563.62 × 272.80
  4. Step 4: Simplify right side
    376.12x = 153,755.54
  5. Step 5: Solve for x
    x = 153,755.54/376.12
  6. Step 6: Final answer
    x = 408.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.