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Finding the Fourth Proportional to 974.98, 1,462.80 and 481.09

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Solution

The fourth proportional to 974.98, 1,462.80 and 481.09 is: 721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.98 : 1,462.80 = 481.09 : x
  2. Step 2: Convert to fraction form
    974.98/1,462.80 = 481.09/x
  3. Step 3: Cross multiply
    974.98x = 1,462.80 × 481.09
  4. Step 4: Simplify right side
    974.98x = 703,738.45
  5. Step 5: Solve for x
    x = 703,738.45/974.98
  6. Step 6: Final answer
    x = 721.80

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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.