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Finding the Fourth Proportional to 192.43, 265.50 and 108.38

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Solution

The fourth proportional to 192.43, 265.50 and 108.38 is: 149.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.43 : 265.50 = 108.38 : x
  2. Step 2: Convert to fraction form
    192.43/265.50 = 108.38/x
  3. Step 3: Cross multiply
    192.43x = 265.50 × 108.38
  4. Step 4: Simplify right side
    192.43x = 28,774.89
  5. Step 5: Solve for x
    x = 28,774.89/192.43
  6. Step 6: Final answer
    x = 149.54

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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.