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Finding the Fourth Proportional to 1,198.32, 1,797.36 and 548.64

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Solution

The fourth proportional to 1,198.32, 1,797.36 and 548.64 is: 822.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,198.32 : 1,797.36 = 548.64 : x
  2. Step 2: Convert to fraction form
    1,198.32/1,797.36 = 548.64/x
  3. Step 3: Cross multiply
    1,198.32x = 1,797.36 × 548.64
  4. Step 4: Simplify right side
    1,198.32x = 986,103.59
  5. Step 5: Solve for x
    x = 986,103.59/1,198.32
  6. Step 6: Final answer
    x = 822.91

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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.