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Finding the Fourth Proportional to 289.58, 399.83 and 179.09

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Solution

The fourth proportional to 289.58, 399.83 and 179.09 is: 247.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.58 : 399.83 = 179.09 : x
  2. Step 2: Convert to fraction form
    289.58/399.83 = 179.09/x
  3. Step 3: Cross multiply
    289.58x = 399.83 × 179.09
  4. Step 4: Simplify right side
    289.58x = 71,604.66
  5. Step 5: Solve for x
    x = 71,604.66/289.58
  6. Step 6: Final answer
    x = 247.27

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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.