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Finding the Fourth Proportional to 1,727.80, 2,591.70 and 573.55

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Solution

The fourth proportional to 1,727.80, 2,591.70 and 573.55 is: 860.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.80 : 2,591.70 = 573.55 : x
  2. Step 2: Convert to fraction form
    1,727.80/2,591.70 = 573.55/x
  3. Step 3: Cross multiply
    1,727.80x = 2,591.70 × 573.55
  4. Step 4: Simplify right side
    1,727.80x = 1,486,469.54
  5. Step 5: Solve for x
    x = 1,486,469.54/1,727.80
  6. Step 6: Final answer
    x = 860.33

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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.