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Finding the Fourth Proportional to 882.21, 1,216.77 and 616.57

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Solution

The fourth proportional to 882.21, 1,216.77 and 616.57 is: 850.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.21 : 1,216.77 = 616.57 : x
  2. Step 2: Convert to fraction form
    882.21/1,216.77 = 616.57/x
  3. Step 3: Cross multiply
    882.21x = 1,216.77 × 616.57
  4. Step 4: Simplify right side
    882.21x = 750,218.52
  5. Step 5: Solve for x
    x = 750,218.52/882.21
  6. Step 6: Final answer
    x = 850.38

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1.5x scale

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.