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Finding the Fourth Proportional to 134.21, 199.72 and 132.14

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Solution

The fourth proportional to 134.21, 199.72 and 132.14 is: 196.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.21 : 199.72 = 132.14 : x
  2. Step 2: Convert to fraction form
    134.21/199.72 = 132.14/x
  3. Step 3: Cross multiply
    134.21x = 199.72 × 132.14
  4. Step 4: Simplify right side
    134.21x = 26,391.00
  5. Step 5: Solve for x
    x = 26,391.00/134.21
  6. Step 6: Final answer
    x = 196.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.