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Finding the Fourth Proportional to 563.39, 844.38 and 255.15

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Solution

The fourth proportional to 563.39, 844.38 and 255.15 is: 382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.39 : 844.38 = 255.15 : x
  2. Step 2: Convert to fraction form
    563.39/844.38 = 255.15/x
  3. Step 3: Cross multiply
    563.39x = 844.38 × 255.15
  4. Step 4: Simplify right side
    563.39x = 215,443.56
  5. Step 5: Solve for x
    x = 215,443.56/563.39
  6. Step 6: Final answer
    x = 382.41

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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.