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Finding the Fourth Proportional to 1,718.18, 2,575.85 and 677.73

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Solution

The fourth proportional to 1,718.18, 2,575.85 and 677.73 is: 1,016.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,718.18 : 2,575.85 = 677.73 : x
  2. Step 2: Convert to fraction form
    1,718.18/2,575.85 = 677.73/x
  3. Step 3: Cross multiply
    1,718.18x = 2,575.85 × 677.73
  4. Step 4: Simplify right side
    1,718.18x = 1,745,727.43
  5. Step 5: Solve for x
    x = 1,745,727.43/1,718.18
  6. Step 6: Final answer
    x = 1,016.04

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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.