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Finding the Fourth Proportional to 843.86, 1,266.49 and 433.39

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Solution

The fourth proportional to 843.86, 1,266.49 and 433.39 is: 650.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.86 : 1,266.49 = 433.39 : x
  2. Step 2: Convert to fraction form
    843.86/1,266.49 = 433.39/x
  3. Step 3: Cross multiply
    843.86x = 1,266.49 × 433.39
  4. Step 4: Simplify right side
    843.86x = 548,877.77
  5. Step 5: Solve for x
    x = 548,877.77/843.86
  6. Step 6: Final answer
    x = 650.44

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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.