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Finding the Fourth Proportional to 1,818.43, 2,729.00 and 708.02

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Solution

The fourth proportional to 1,818.43, 2,729.00 and 708.02 is: 1,062.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.43 : 2,729.00 = 708.02 : x
  2. Step 2: Convert to fraction form
    1,818.43/2,729.00 = 708.02/x
  3. Step 3: Cross multiply
    1,818.43x = 2,729.00 × 708.02
  4. Step 4: Simplify right side
    1,818.43x = 1,932,195.17
  5. Step 5: Solve for x
    x = 1,932,195.17/1,818.43
  6. Step 6: Final answer
    x = 1,062.56

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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.