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Finding the Fourth Proportional to 1,092.52, 1,638.80 and 323.02

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Solution

The fourth proportional to 1,092.52, 1,638.80 and 323.02 is: 484.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,092.52 : 1,638.80 = 323.02 : x
  2. Step 2: Convert to fraction form
    1,092.52/1,638.80 = 323.02/x
  3. Step 3: Cross multiply
    1,092.52x = 1,638.80 × 323.02
  4. Step 4: Simplify right side
    1,092.52x = 529,365.18
  5. Step 5: Solve for x
    x = 529,365.18/1,092.52
  6. Step 6: Final answer
    x = 484.54

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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.