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Finding the Fourth Proportional to 1,169.73, 1,753.43 and 649.96

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Solution

The fourth proportional to 1,169.73, 1,753.43 and 649.96 is: 974.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.73 : 1,753.43 = 649.96 : x
  2. Step 2: Convert to fraction form
    1,169.73/1,753.43 = 649.96/x
  3. Step 3: Cross multiply
    1,169.73x = 1,753.43 × 649.96
  4. Step 4: Simplify right side
    1,169.73x = 1,139,659.36
  5. Step 5: Solve for x
    x = 1,139,659.36/1,169.73
  6. Step 6: Final answer
    x = 974.29

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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.