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Finding the Fourth Proportional to 825.57, 1,238.25 and 363.26

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Solution

The fourth proportional to 825.57, 1,238.25 and 363.26 is: 544.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    825.57 : 1,238.25 = 363.26 : x
  2. Step 2: Convert to fraction form
    825.57/1,238.25 = 363.26/x
  3. Step 3: Cross multiply
    825.57x = 1,238.25 × 363.26
  4. Step 4: Simplify right side
    825.57x = 449,806.70
  5. Step 5: Solve for x
    x = 449,806.70/825.57
  6. Step 6: Final answer
    x = 544.84

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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.