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Finding the Fourth Proportional to 844.25, 1,266.62 and 454.19

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Solution

The fourth proportional to 844.25, 1,266.62 and 454.19 is: 681.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.25 : 1,266.62 = 454.19 : x
  2. Step 2: Convert to fraction form
    844.25/1,266.62 = 454.19/x
  3. Step 3: Cross multiply
    844.25x = 1,266.62 × 454.19
  4. Step 4: Simplify right side
    844.25x = 575,287.03
  5. Step 5: Solve for x
    x = 575,287.03/844.25
  6. Step 6: Final answer
    x = 681.42

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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.