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Finding the Fourth Proportional to 192.41, 265.43 and 122.35

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Solution

The fourth proportional to 192.41, 265.43 and 122.35 is: 168.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.41 : 265.43 = 122.35 : x
  2. Step 2: Convert to fraction form
    192.41/265.43 = 122.35/x
  3. Step 3: Cross multiply
    192.41x = 265.43 × 122.35
  4. Step 4: Simplify right side
    192.41x = 32,474.81
  5. Step 5: Solve for x
    x = 32,474.81/192.41
  6. Step 6: Final answer
    x = 168.78

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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.