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Finding the Fourth Proportional to 800.26, 1,200.17 and 410.14

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Solution

The fourth proportional to 800.26, 1,200.17 and 410.14 is: 615.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.26 : 1,200.17 = 410.14 : x
  2. Step 2: Convert to fraction form
    800.26/1,200.17 = 410.14/x
  3. Step 3: Cross multiply
    800.26x = 1,200.17 × 410.14
  4. Step 4: Simplify right side
    800.26x = 492,234.57
  5. Step 5: Solve for x
    x = 492,234.57/800.26
  6. Step 6: Final answer
    x = 615.09

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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.