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Finding the Fourth Proportional to 844.55, 1,266.40 and 511.33

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Solution

The fourth proportional to 844.55, 1,266.40 and 511.33 is: 766.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.55 : 1,266.40 = 511.33 : x
  2. Step 2: Convert to fraction form
    844.55/1,266.40 = 511.33/x
  3. Step 3: Cross multiply
    844.55x = 1,266.40 × 511.33
  4. Step 4: Simplify right side
    844.55x = 647,539.42
  5. Step 5: Solve for x
    x = 647,539.42/844.55
  6. Step 6: Final answer
    x = 766.73

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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.