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Finding the Fourth Proportional to 1,273.52, 1,911.20 and 884.42

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Solution

The fourth proportional to 1,273.52, 1,911.20 and 884.42 is: 1,327.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.52 : 1,911.20 = 884.42 : x
  2. Step 2: Convert to fraction form
    1,273.52/1,911.20 = 884.42/x
  3. Step 3: Cross multiply
    1,273.52x = 1,911.20 × 884.42
  4. Step 4: Simplify right side
    1,273.52x = 1,690,296.69
  5. Step 5: Solve for x
    x = 1,690,296.69/1,273.52
  6. Step 6: Final answer
    x = 1,327.26

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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.