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Finding the Fourth Proportional to 181.24, 249.58 and 154.91

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Solution

The fourth proportional to 181.24, 249.58 and 154.91 is: 213.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    181.24 : 249.58 = 154.91 : x
  2. Step 2: Convert to fraction form
    181.24/249.58 = 154.91/x
  3. Step 3: Cross multiply
    181.24x = 249.58 × 154.91
  4. Step 4: Simplify right side
    181.24x = 38,663.26
  5. Step 5: Solve for x
    x = 38,663.26/181.24
  6. Step 6: Final answer
    x = 213.33

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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.