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Finding the Fourth Proportional to 201.02, 277.39 and 135.41

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Solution

The fourth proportional to 201.02, 277.39 and 135.41 is: 186.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.02 : 277.39 = 135.41 : x
  2. Step 2: Convert to fraction form
    201.02/277.39 = 135.41/x
  3. Step 3: Cross multiply
    201.02x = 277.39 × 135.41
  4. Step 4: Simplify right side
    201.02x = 37,561.38
  5. Step 5: Solve for x
    x = 37,561.38/201.02
  6. Step 6: Final answer
    x = 186.85

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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.