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Finding the Fourth Proportional to 837.74, 1,255.81 and 563.91

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Solution

The fourth proportional to 837.74, 1,255.81 and 563.91 is: 845.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.74 : 1,255.81 = 563.91 : x
  2. Step 2: Convert to fraction form
    837.74/1,255.81 = 563.91/x
  3. Step 3: Cross multiply
    837.74x = 1,255.81 × 563.91
  4. Step 4: Simplify right side
    837.74x = 708,163.82
  5. Step 5: Solve for x
    x = 708,163.82/837.74
  6. Step 6: Final answer
    x = 845.33

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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.