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Finding the Fourth Proportional to 192, 264.90 and 126.54

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Solution

The fourth proportional to 192, 264.90 and 126.54 is: 174.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    192 : 264.90 = 126.54 : x
  2. Step 2: Convert to fraction form
    192/264.90 = 126.54/x
  3. Step 3: Cross multiply
    192x = 264.90 × 126.54
  4. Step 4: Simplify right side
    192x = 33,520.45
  5. Step 5: Solve for x
    x = 33,520.45/192
  6. Step 6: Final answer
    x = 174.59

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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.