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Finding the Fourth Proportional to 1,099, 1,648.50 and 329.48

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Solution

The fourth proportional to 1,099, 1,648.50 and 329.48 is: 494.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099 : 1,648.50 = 329.48 : x
  2. Step 2: Convert to fraction form
    1,099/1,648.50 = 329.48/x
  3. Step 3: Cross multiply
    1,099x = 1,648.50 × 329.48
  4. Step 4: Simplify right side
    1,099x = 543,147.78
  5. Step 5: Solve for x
    x = 543,147.78/1,099
  6. Step 6: Final answer
    x = 494.22

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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.