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Finding the Fourth Proportional to 892.69, 1,339.22 and 276.37

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Solution

The fourth proportional to 892.69, 1,339.22 and 276.37 is: 414.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    892.69 : 1,339.22 = 276.37 : x
  2. Step 2: Convert to fraction form
    892.69/1,339.22 = 276.37/x
  3. Step 3: Cross multiply
    892.69x = 1,339.22 × 276.37
  4. Step 4: Simplify right side
    892.69x = 370,120.23
  5. Step 5: Solve for x
    x = 370,120.23/892.69
  6. Step 6: Final answer
    x = 414.61

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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.