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Finding the Fourth Proportional to 201.80, 277.80 and 181.07

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Solution

The fourth proportional to 201.80, 277.80 and 181.07 is: 249.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.80 : 277.80 = 181.07 : x
  2. Step 2: Convert to fraction form
    201.80/277.80 = 181.07/x
  3. Step 3: Cross multiply
    201.80x = 277.80 × 181.07
  4. Step 4: Simplify right side
    201.80x = 50,301.25
  5. Step 5: Solve for x
    x = 50,301.25/201.80
  6. Step 6: Final answer
    x = 249.26

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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.