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Finding the Fourth Proportional to 192.12, 265.12 and 114.48

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Solution

The fourth proportional to 192.12, 265.12 and 114.48 is: 157.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.12 : 265.12 = 114.48 : x
  2. Step 2: Convert to fraction form
    192.12/265.12 = 114.48/x
  3. Step 3: Cross multiply
    192.12x = 265.12 × 114.48
  4. Step 4: Simplify right side
    192.12x = 30,350.94
  5. Step 5: Solve for x
    x = 30,350.94/192.12
  6. Step 6: Final answer
    x = 157.98

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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.