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Finding the Fourth Proportional to 1,818.98, 2,729.01 and 708.74

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Solution

The fourth proportional to 1,818.98, 2,729.01 and 708.74 is: 1,063.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.98 : 2,729.01 = 708.74 : x
  2. Step 2: Convert to fraction form
    1,818.98/2,729.01 = 708.74/x
  3. Step 3: Cross multiply
    1,818.98x = 2,729.01 × 708.74
  4. Step 4: Simplify right side
    1,818.98x = 1,934,158.55
  5. Step 5: Solve for x
    x = 1,934,158.55/1,818.98
  6. Step 6: Final answer
    x = 1,063.32

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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.