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Finding the Fourth Proportional to 825.88, 1,238.63 and 240.73

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Solution

The fourth proportional to 825.88, 1,238.63 and 240.73 is: 361.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    825.88 : 1,238.63 = 240.73 : x
  2. Step 2: Convert to fraction form
    825.88/1,238.63 = 240.73/x
  3. Step 3: Cross multiply
    825.88x = 1,238.63 × 240.73
  4. Step 4: Simplify right side
    825.88x = 298,175.40
  5. Step 5: Solve for x
    x = 298,175.40/825.88
  6. Step 6: Final answer
    x = 361.04

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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.