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Finding the Fourth Proportional to 548.14, 822.18 and 201.31

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Solution

The fourth proportional to 548.14, 822.18 and 201.31 is: 301.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.14 : 822.18 = 201.31 : x
  2. Step 2: Convert to fraction form
    548.14/822.18 = 201.31/x
  3. Step 3: Cross multiply
    548.14x = 822.18 × 201.31
  4. Step 4: Simplify right side
    548.14x = 165,513.06
  5. Step 5: Solve for x
    x = 165,513.06/548.14
  6. Step 6: Final answer
    x = 301.95

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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.