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Finding the Fourth Proportional to 1,711.55, 2,568 and 845.25

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Solution

The fourth proportional to 1,711.55, 2,568 and 845.25 is: 1,268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.55 : 2,568 = 845.25 : x
  2. Step 2: Convert to fraction form
    1,711.55/2,568 = 845.25/x
  3. Step 3: Cross multiply
    1,711.55x = 2,568 × 845.25
  4. Step 4: Simplify right side
    1,711.55x = 2,170,602
  5. Step 5: Solve for x
    x = 2,170,602/1,711.55
  6. Step 6: Final answer
    x = 1,268.21

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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.