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Finding the Fourth Proportional to 844.54, 1,266.82 and 571.18

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Solution

The fourth proportional to 844.54, 1,266.82 and 571.18 is: 856.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.54 : 1,266.82 = 571.18 : x
  2. Step 2: Convert to fraction form
    844.54/1,266.82 = 571.18/x
  3. Step 3: Cross multiply
    844.54x = 1,266.82 × 571.18
  4. Step 4: Simplify right side
    844.54x = 723,582.25
  5. Step 5: Solve for x
    x = 723,582.25/844.54
  6. Step 6: Final answer
    x = 856.78

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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.