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Finding the Fourth Proportional to 1,118.96, 1,673.52 and 996.44

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Solution

The fourth proportional to 1,118.96, 1,673.52 and 996.44 is: 1,490.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118.96 : 1,673.52 = 996.44 : x
  2. Step 2: Convert to fraction form
    1,118.96/1,673.52 = 996.44/x
  3. Step 3: Cross multiply
    1,118.96x = 1,673.52 × 996.44
  4. Step 4: Simplify right side
    1,118.96x = 1,667,562.27
  5. Step 5: Solve for x
    x = 1,667,562.27/1,118.96
  6. Step 6: Final answer
    x = 1,490.28

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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.