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Finding the Fourth Proportional to 181.04, 249.38 and 154.61

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Solution

The fourth proportional to 181.04, 249.38 and 154.61 is: 212.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.04 : 249.38 = 154.61 : x
  2. Step 2: Convert to fraction form
    181.04/249.38 = 154.61/x
  3. Step 3: Cross multiply
    181.04x = 249.38 × 154.61
  4. Step 4: Simplify right side
    181.04x = 38,556.14
  5. Step 5: Solve for x
    x = 38,556.14/181.04
  6. Step 6: Final answer
    x = 212.98

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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.