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Finding the Fourth Proportional to 201.48, 277.89 and 135.96

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Solution

The fourth proportional to 201.48, 277.89 and 135.96 is: 187.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.48 : 277.89 = 135.96 : x
  2. Step 2: Convert to fraction form
    201.48/277.89 = 135.96/x
  3. Step 3: Cross multiply
    201.48x = 277.89 × 135.96
  4. Step 4: Simplify right side
    201.48x = 37,781.92
  5. Step 5: Solve for x
    x = 37,781.92/201.48
  6. Step 6: Final answer
    x = 187.52

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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.