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Finding the Fourth Proportional to 1,231.28, 1,847.19 and 365.54

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Solution

The fourth proportional to 1,231.28, 1,847.19 and 365.54 is: 548.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.28 : 1,847.19 = 365.54 : x
  2. Step 2: Convert to fraction form
    1,231.28/1,847.19 = 365.54/x
  3. Step 3: Cross multiply
    1,231.28x = 1,847.19 × 365.54
  4. Step 4: Simplify right side
    1,231.28x = 675,221.83
  5. Step 5: Solve for x
    x = 675,221.83/1,231.28
  6. Step 6: Final answer
    x = 548.39

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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.