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Finding the Fourth Proportional to 1,198.89, 1,794.42 and 649.71

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Solution

The fourth proportional to 1,198.89, 1,794.42 and 649.71 is: 972.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.89 : 1,794.42 = 649.71 : x
  2. Step 2: Convert to fraction form
    1,198.89/1,794.42 = 649.71/x
  3. Step 3: Cross multiply
    1,198.89x = 1,794.42 × 649.71
  4. Step 4: Simplify right side
    1,198.89x = 1,165,852.62
  5. Step 5: Solve for x
    x = 1,165,852.62/1,198.89
  6. Step 6: Final answer
    x = 972.44

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.