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Finding the Fourth Proportional to 209.37, 289.18 and 181.73

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Solution

The fourth proportional to 209.37, 289.18 and 181.73 is: 251.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    209.37 : 289.18 = 181.73 : x
  2. Step 2: Convert to fraction form
    209.37/289.18 = 181.73/x
  3. Step 3: Cross multiply
    209.37x = 289.18 × 181.73
  4. Step 4: Simplify right side
    209.37x = 52,552.68
  5. Step 5: Solve for x
    x = 52,552.68/209.37
  6. Step 6: Final answer
    x = 251.00

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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.