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Finding the Fourth Proportional to 1,711.44, 2,568.30 and 671.43

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Solution

The fourth proportional to 1,711.44, 2,568.30 and 671.43 is: 1,007.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.44 : 2,568.30 = 671.43 : x
  2. Step 2: Convert to fraction form
    1,711.44/2,568.30 = 671.43/x
  3. Step 3: Cross multiply
    1,711.44x = 2,568.30 × 671.43
  4. Step 4: Simplify right side
    1,711.44x = 1,724,433.67
  5. Step 5: Solve for x
    x = 1,724,433.67/1,711.44
  6. Step 6: Final answer
    x = 1,007.59

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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.