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Finding the Fourth Proportional to 563.28, 843.97 and 285.26

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Solution

The fourth proportional to 563.28, 843.97 and 285.26 is: 427.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.28 : 843.97 = 285.26 : x
  2. Step 2: Convert to fraction form
    563.28/843.97 = 285.26/x
  3. Step 3: Cross multiply
    563.28x = 843.97 × 285.26
  4. Step 4: Simplify right side
    563.28x = 240,750.88
  5. Step 5: Solve for x
    x = 240,750.88/563.28
  6. Step 6: Final answer
    x = 427.41

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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.