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Finding the Fourth Proportional to 134.15, 201.69 and 126.72

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Solution

The fourth proportional to 134.15, 201.69 and 126.72 is: 190.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.15 : 201.69 = 126.72 : x
  2. Step 2: Convert to fraction form
    134.15/201.69 = 126.72/x
  3. Step 3: Cross multiply
    134.15x = 201.69 × 126.72
  4. Step 4: Simplify right side
    134.15x = 25,558.16
  5. Step 5: Solve for x
    x = 25,558.16/134.15
  6. Step 6: Final answer
    x = 190.53

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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.