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Finding the Fourth Proportional to 844.20, 1,165.11 and 494.89

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Solution

The fourth proportional to 844.20, 1,165.11 and 494.89 is: 683.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.20 : 1,165.11 = 494.89 : x
  2. Step 2: Convert to fraction form
    844.20/1,165.11 = 494.89/x
  3. Step 3: Cross multiply
    844.20x = 1,165.11 × 494.89
  4. Step 4: Simplify right side
    844.20x = 576,601.29
  5. Step 5: Solve for x
    x = 576,601.29/844.20
  6. Step 6: Final answer
    x = 683.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.