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Finding the Fourth Proportional to 893.22, 1,339.82 and 276.94

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Solution

The fourth proportional to 893.22, 1,339.82 and 276.94 is: 415.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.22 : 1,339.82 = 276.94 : x
  2. Step 2: Convert to fraction form
    893.22/1,339.82 = 276.94/x
  3. Step 3: Cross multiply
    893.22x = 1,339.82 × 276.94
  4. Step 4: Simplify right side
    893.22x = 371,049.75
  5. Step 5: Solve for x
    x = 371,049.75/893.22
  6. Step 6: Final answer
    x = 415.41

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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.