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Finding the Fourth Proportional to 893.44, 1,339.06 and 481.56

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Solution

The fourth proportional to 893.44, 1,339.06 and 481.56 is: 721.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.44 : 1,339.06 = 481.56 : x
  2. Step 2: Convert to fraction form
    893.44/1,339.06 = 481.56/x
  3. Step 3: Cross multiply
    893.44x = 1,339.06 × 481.56
  4. Step 4: Simplify right side
    893.44x = 644,837.73
  5. Step 5: Solve for x
    x = 644,837.73/893.44
  6. Step 6: Final answer
    x = 721.75

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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.