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Finding the Fourth Proportional to 181.21, 249.76 and 166.52

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Solution

The fourth proportional to 181.21, 249.76 and 166.52 is: 229.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.21 : 249.76 = 166.52 : x
  2. Step 2: Convert to fraction form
    181.21/249.76 = 166.52/x
  3. Step 3: Cross multiply
    181.21x = 249.76 × 166.52
  4. Step 4: Simplify right side
    181.21x = 41,588.37
  5. Step 5: Solve for x
    x = 41,588.37/181.21
  6. Step 6: Final answer
    x = 229.51

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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.