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Finding the Fourth Proportional to 201.11, 277.45 and 135.50

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Solution

The fourth proportional to 201.11, 277.45 and 135.50 is: 186.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.11 : 277.45 = 135.50 : x
  2. Step 2: Convert to fraction form
    201.11/277.45 = 135.50/x
  3. Step 3: Cross multiply
    201.11x = 277.45 × 135.50
  4. Step 4: Simplify right side
    201.11x = 37,592.75
  5. Step 5: Solve for x
    x = 37,592.75/201.11
  6. Step 6: Final answer
    x = 186.93

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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.