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Finding the Fourth Proportional to 134.16, 200.96 and 126.64

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Solution

The fourth proportional to 134.16, 200.96 and 126.64 is: 189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.16 : 200.96 = 126.64 : x
  2. Step 2: Convert to fraction form
    134.16/200.96 = 126.64/x
  3. Step 3: Cross multiply
    134.16x = 200.96 × 126.64
  4. Step 4: Simplify right side
    134.16x = 25,449.57
  5. Step 5: Solve for x
    x = 25,449.57/134.16
  6. Step 6: Final answer
    x = 189.70

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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.