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Finding the Fourth Proportional to 192.27, 265.35 and 108.25

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Solution

The fourth proportional to 192.27, 265.35 and 108.25 is: 149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.27 : 265.35 = 108.25 : x
  2. Step 2: Convert to fraction form
    192.27/265.35 = 108.25/x
  3. Step 3: Cross multiply
    192.27x = 265.35 × 108.25
  4. Step 4: Simplify right side
    192.27x = 28,723.95
  5. Step 5: Solve for x
    x = 28,723.95/192.27
  6. Step 6: Final answer
    x = 149.40

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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.