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Finding the Fourth Proportional to 800.69, 1,200.22 and 471.83

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Solution

The fourth proportional to 800.69, 1,200.22 and 471.83 is: 707.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.69 : 1,200.22 = 471.83 : x
  2. Step 2: Convert to fraction form
    800.69/1,200.22 = 471.83/x
  3. Step 3: Cross multiply
    800.69x = 1,200.22 × 471.83
  4. Step 4: Simplify right side
    800.69x = 566,292.62
  5. Step 5: Solve for x
    x = 566,292.62/800.69
  6. Step 6: Final answer
    x = 707.26

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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.