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Finding the Fourth Proportional to 800.12, 1,200.27 and 367.22

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Solution

The fourth proportional to 800.12, 1,200.27 and 367.22 is: 550.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.12 : 1,200.27 = 367.22 : x
  2. Step 2: Convert to fraction form
    800.12/1,200.27 = 367.22/x
  3. Step 3: Cross multiply
    800.12x = 1,200.27 × 367.22
  4. Step 4: Simplify right side
    800.12x = 440,763.15
  5. Step 5: Solve for x
    x = 440,763.15/800.12
  6. Step 6: Final answer
    x = 550.87

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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.