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Finding the Fourth Proportional to 192.11, 265.25 and 118.48

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Solution

The fourth proportional to 192.11, 265.25 and 118.48 is: 163.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.11 : 265.25 = 118.48 : x
  2. Step 2: Convert to fraction form
    192.11/265.25 = 118.48/x
  3. Step 3: Cross multiply
    192.11x = 265.25 × 118.48
  4. Step 4: Simplify right side
    192.11x = 31,426.82
  5. Step 5: Solve for x
    x = 31,426.82/192.11
  6. Step 6: Final answer
    x = 163.59

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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.