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Finding the Fourth Proportional to 1,813.23, 2,719.17 and 717.75

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Solution

The fourth proportional to 1,813.23, 2,719.17 and 717.75 is: 1,076.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.23 : 2,719.17 = 717.75 : x
  2. Step 2: Convert to fraction form
    1,813.23/2,719.17 = 717.75/x
  3. Step 3: Cross multiply
    1,813.23x = 2,719.17 × 717.75
  4. Step 4: Simplify right side
    1,813.23x = 1,951,684.27
  5. Step 5: Solve for x
    x = 1,951,684.27/1,813.23
  6. Step 6: Final answer
    x = 1,076.36

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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.