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Finding the Fourth Proportional to 201.68, 277.88 and 136.07

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Solution

The fourth proportional to 201.68, 277.88 and 136.07 is: 187.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.68 : 277.88 = 136.07 : x
  2. Step 2: Convert to fraction form
    201.68/277.88 = 136.07/x
  3. Step 3: Cross multiply
    201.68x = 277.88 × 136.07
  4. Step 4: Simplify right side
    201.68x = 37,809.06
  5. Step 5: Solve for x
    x = 37,809.06/201.68
  6. Step 6: Final answer
    x = 187.48

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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.