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Finding the Fourth Proportional to 1,198.44, 1,797.78 and 549.36

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Solution

The fourth proportional to 1,198.44, 1,797.78 and 549.36 is: 824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.44 : 1,797.78 = 549.36 : x
  2. Step 2: Convert to fraction form
    1,198.44/1,797.78 = 549.36/x
  3. Step 3: Cross multiply
    1,198.44x = 1,797.78 × 549.36
  4. Step 4: Simplify right side
    1,198.44x = 987,628.42
  5. Step 5: Solve for x
    x = 987,628.42/1,198.44
  6. Step 6: Final answer
    x = 824.10

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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.