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Finding the Fourth Proportional to 137.04, 205.57 and 82.27

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Solution

The fourth proportional to 137.04, 205.57 and 82.27 is: 123.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.04 : 205.57 = 82.27 : x
  2. Step 2: Convert to fraction form
    137.04/205.57 = 82.27/x
  3. Step 3: Cross multiply
    137.04x = 205.57 × 82.27
  4. Step 4: Simplify right side
    137.04x = 16,912.14
  5. Step 5: Solve for x
    x = 16,912.14/137.04
  6. Step 6: Final answer
    x = 123.41

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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.