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Finding the Fourth Proportional to 1,199.10, 1,797.30 and 548.49

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Solution

The fourth proportional to 1,199.10, 1,797.30 and 548.49 is: 822.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.10 : 1,797.30 = 548.49 : x
  2. Step 2: Convert to fraction form
    1,199.10/1,797.30 = 548.49/x
  3. Step 3: Cross multiply
    1,199.10x = 1,797.30 × 548.49
  4. Step 4: Simplify right side
    1,199.10x = 985,801.08
  5. Step 5: Solve for x
    x = 985,801.08/1,199.10
  6. Step 6: Final answer
    x = 822.12

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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.