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Finding the Fourth Proportional to 835.25, 1,251.75 and 488.97

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Solution

The fourth proportional to 835.25, 1,251.75 and 488.97 is: 732.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    835.25 : 1,251.75 = 488.97 : x
  2. Step 2: Convert to fraction form
    835.25/1,251.75 = 488.97/x
  3. Step 3: Cross multiply
    835.25x = 1,251.75 × 488.97
  4. Step 4: Simplify right side
    835.25x = 612,070.03
  5. Step 5: Solve for x
    x = 612,070.03/835.25
  6. Step 6: Final answer
    x = 732.80

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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.