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Finding the Fourth Proportional to 563.22, 843.39 and 515.70

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Solution

The fourth proportional to 563.22, 843.39 and 515.70 is: 772.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.22 : 843.39 = 515.70 : x
  2. Step 2: Convert to fraction form
    563.22/843.39 = 515.70/x
  3. Step 3: Cross multiply
    563.22x = 843.39 × 515.70
  4. Step 4: Simplify right side
    563.22x = 434,936.22
  5. Step 5: Solve for x
    x = 434,936.22/563.22
  6. Step 6: Final answer
    x = 772.23

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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.