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Finding the Fourth Proportional to 1,496.80, 2,245.56 and 881

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Solution

The fourth proportional to 1,496.80, 2,245.56 and 881 is: 1,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,496.80 : 2,245.56 = 881 : x
  2. Step 2: Convert to fraction form
    1,496.80/2,245.56 = 881/x
  3. Step 3: Cross multiply
    1,496.80x = 2,245.56 × 881
  4. Step 4: Simplify right side
    1,496.80x = 1,978,338.36
  5. Step 5: Solve for x
    x = 1,978,338.36/1,496.80
  6. Step 6: Final answer
    x = 1,321.71

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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.