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Finding the Fourth Proportional to 201.09, 277.59 and 134.80

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Solution

The fourth proportional to 201.09, 277.59 and 134.80 is: 186.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.09 : 277.59 = 134.80 : x
  2. Step 2: Convert to fraction form
    201.09/277.59 = 134.80/x
  3. Step 3: Cross multiply
    201.09x = 277.59 × 134.80
  4. Step 4: Simplify right side
    201.09x = 37,419.13
  5. Step 5: Solve for x
    x = 37,419.13/201.09
  6. Step 6: Final answer
    x = 186.08

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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.