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Finding the Fourth Proportional to 192.44, 265.58 and 105.12

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Solution

The fourth proportional to 192.44, 265.58 and 105.12 is: 145.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.44 : 265.58 = 105.12 : x
  2. Step 2: Convert to fraction form
    192.44/265.58 = 105.12/x
  3. Step 3: Cross multiply
    192.44x = 265.58 × 105.12
  4. Step 4: Simplify right side
    192.44x = 27,917.64
  5. Step 5: Solve for x
    x = 27,917.64/192.44
  6. Step 6: Final answer
    x = 145.07

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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.