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Finding the Fourth Proportional to 682.80, 1,024.24 and 195.88

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Solution

The fourth proportional to 682.80, 1,024.24 and 195.88 is: 293.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.80 : 1,024.24 = 195.88 : x
  2. Step 2: Convert to fraction form
    682.80/1,024.24 = 195.88/x
  3. Step 3: Cross multiply
    682.80x = 1,024.24 × 195.88
  4. Step 4: Simplify right side
    682.80x = 200,628.13
  5. Step 5: Solve for x
    x = 200,628.13/682.80
  6. Step 6: Final answer
    x = 293.83

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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.