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Finding the Fourth Proportional to 844.83, 1,267.26 and 455.15

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Solution

The fourth proportional to 844.83, 1,267.26 and 455.15 is: 682.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.83 : 1,267.26 = 455.15 : x
  2. Step 2: Convert to fraction form
    844.83/1,267.26 = 455.15/x
  3. Step 3: Cross multiply
    844.83x = 1,267.26 × 455.15
  4. Step 4: Simplify right side
    844.83x = 576,793.39
  5. Step 5: Solve for x
    x = 576,793.39/844.83
  6. Step 6: Final answer
    x = 682.73

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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.