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Finding the Fourth Proportional to 800.60, 1,104.74 and 635.23

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Solution

The fourth proportional to 800.60, 1,104.74 and 635.23 is: 876.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    800.60 : 1,104.74 = 635.23 : x
  2. Step 2: Convert to fraction form
    800.60/1,104.74 = 635.23/x
  3. Step 3: Cross multiply
    800.60x = 1,104.74 × 635.23
  4. Step 4: Simplify right side
    800.60x = 701,758.47
  5. Step 5: Solve for x
    x = 701,758.47/800.60
  6. Step 6: Final answer
    x = 876.54

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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.