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Finding the Fourth Proportional to 1,711.88, 2,568.20 and 541.95

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Solution

The fourth proportional to 1,711.88, 2,568.20 and 541.95 is: 813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,711.88 : 2,568.20 = 541.95 : x
  2. Step 2: Convert to fraction form
    1,711.88/2,568.20 = 541.95/x
  3. Step 3: Cross multiply
    1,711.88x = 2,568.20 × 541.95
  4. Step 4: Simplify right side
    1,711.88x = 1,391,838.95
  5. Step 5: Solve for x
    x = 1,391,838.95/1,711.88
  6. Step 6: Final answer
    x = 813.05

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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.