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Finding the Fourth Proportional to 1,723.97, 2,584.17 and 682.55

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Solution

The fourth proportional to 1,723.97, 2,584.17 and 682.55 is: 1,023.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.97 : 2,584.17 = 682.55 : x
  2. Step 2: Convert to fraction form
    1,723.97/2,584.17 = 682.55/x
  3. Step 3: Cross multiply
    1,723.97x = 2,584.17 × 682.55
  4. Step 4: Simplify right side
    1,723.97x = 1,763,825.23
  5. Step 5: Solve for x
    x = 1,763,825.23/1,723.97
  6. Step 6: Final answer
    x = 1,023.12

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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.