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Finding the Fourth Proportional to 376.43, 563.61 and 254.45

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Solution

The fourth proportional to 376.43, 563.61 and 254.45 is: 380.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.43 : 563.61 = 254.45 : x
  2. Step 2: Convert to fraction form
    376.43/563.61 = 254.45/x
  3. Step 3: Cross multiply
    376.43x = 563.61 × 254.45
  4. Step 4: Simplify right side
    376.43x = 143,410.56
  5. Step 5: Solve for x
    x = 143,410.56/376.43
  6. Step 6: Final answer
    x = 380.98

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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.