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Finding the Fourth Proportional to 843.95, 1,266.27 and 453.71

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Solution

The fourth proportional to 843.95, 1,266.27 and 453.71 is: 680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.95 : 1,266.27 = 453.71 : x
  2. Step 2: Convert to fraction form
    843.95/1,266.27 = 453.71/x
  3. Step 3: Cross multiply
    843.95x = 1,266.27 × 453.71
  4. Step 4: Simplify right side
    843.95x = 574,516.20
  5. Step 5: Solve for x
    x = 574,516.20/843.95
  6. Step 6: Final answer
    x = 680.75

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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.