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Finding the Fourth Proportional to 213.98, 295.25 and 126.68

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Solution

The fourth proportional to 213.98, 295.25 and 126.68 is: 174.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.98 : 295.25 = 126.68 : x
  2. Step 2: Convert to fraction form
    213.98/295.25 = 126.68/x
  3. Step 3: Cross multiply
    213.98x = 295.25 × 126.68
  4. Step 4: Simplify right side
    213.98x = 37,400.16
  5. Step 5: Solve for x
    x = 37,400.16/213.98
  6. Step 6: Final answer
    x = 174.79

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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.