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Finding the Fourth Proportional to 192.88, 266.09 and 122.92

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Solution

The fourth proportional to 192.88, 266.09 and 122.92 is: 169.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.88 : 266.09 = 122.92 : x
  2. Step 2: Convert to fraction form
    192.88/266.09 = 122.92/x
  3. Step 3: Cross multiply
    192.88x = 266.09 × 122.92
  4. Step 4: Simplify right side
    192.88x = 32,705.84
  5. Step 5: Solve for x
    x = 32,705.84/192.88
  6. Step 6: Final answer
    x = 169.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.