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Finding the Fourth Proportional to 264.12, 395.91 and 126.96

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Solution

The fourth proportional to 264.12, 395.91 and 126.96 is: 190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.12 : 395.91 = 126.96 : x
  2. Step 2: Convert to fraction form
    264.12/395.91 = 126.96/x
  3. Step 3: Cross multiply
    264.12x = 395.91 × 126.96
  4. Step 4: Simplify right side
    264.12x = 50,264.73
  5. Step 5: Solve for x
    x = 50,264.73/264.12
  6. Step 6: Final answer
    x = 190.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.