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Finding the Fourth Proportional to 1,097.54, 1,646 and 481.09

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Solution

The fourth proportional to 1,097.54, 1,646 and 481.09 is: 721.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,097.54 : 1,646 = 481.09 : x
  2. Step 2: Convert to fraction form
    1,097.54/1,646 = 481.09/x
  3. Step 3: Cross multiply
    1,097.54x = 1,646 × 481.09
  4. Step 4: Simplify right side
    1,097.54x = 791,874.14
  5. Step 5: Solve for x
    x = 791,874.14/1,097.54
  6. Step 6: Final answer
    x = 721.50

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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.