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Finding the Fourth Proportional to 201.18, 277.56 and 126.51

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Solution

The fourth proportional to 201.18, 277.56 and 126.51 is: 174.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.18 : 277.56 = 126.51 : x
  2. Step 2: Convert to fraction form
    201.18/277.56 = 126.51/x
  3. Step 3: Cross multiply
    201.18x = 277.56 × 126.51
  4. Step 4: Simplify right side
    201.18x = 35,114.12
  5. Step 5: Solve for x
    x = 35,114.12/201.18
  6. Step 6: Final answer
    x = 174.54

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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.