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Finding the Fourth Proportional to 135.04, 201.44 and 126.76

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Solution

The fourth proportional to 135.04, 201.44 and 126.76 is: 189.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.04 : 201.44 = 126.76 : x
  2. Step 2: Convert to fraction form
    135.04/201.44 = 126.76/x
  3. Step 3: Cross multiply
    135.04x = 201.44 × 126.76
  4. Step 4: Simplify right side
    135.04x = 25,534.53
  5. Step 5: Solve for x
    x = 25,534.53/135.04
  6. Step 6: Final answer
    x = 189.09

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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.