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Finding the Fourth Proportional to 844.47, 1,266.75 and 324.38

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Solution

The fourth proportional to 844.47, 1,266.75 and 324.38 is: 486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.47 : 1,266.75 = 324.38 : x
  2. Step 2: Convert to fraction form
    844.47/1,266.75 = 324.38/x
  3. Step 3: Cross multiply
    844.47x = 1,266.75 × 324.38
  4. Step 4: Simplify right side
    844.47x = 410,902.03
  5. Step 5: Solve for x
    x = 410,902.03/844.47
  6. Step 6: Final answer
    x = 486.58

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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.