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Finding the Fourth Proportional to 882.43, 1,217.50 and 616.57

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Solution

The fourth proportional to 882.43, 1,217.50 and 616.57 is: 850.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.43 : 1,217.50 = 616.57 : x
  2. Step 2: Convert to fraction form
    882.43/1,217.50 = 616.57/x
  3. Step 3: Cross multiply
    882.43x = 1,217.50 × 616.57
  4. Step 4: Simplify right side
    882.43x = 750,669.39
  5. Step 5: Solve for x
    x = 750,669.39/882.43
  6. Step 6: Final answer
    x = 850.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.