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Finding the Fourth Proportional to 213.05, 293.97 and 119.79

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Solution

The fourth proportional to 213.05, 293.97 and 119.79 is: 165.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.05 : 293.97 = 119.79 : x
  2. Step 2: Convert to fraction form
    213.05/293.97 = 119.79/x
  3. Step 3: Cross multiply
    213.05x = 293.97 × 119.79
  4. Step 4: Simplify right side
    213.05x = 35,214.67
  5. Step 5: Solve for x
    x = 35,214.67/213.05
  6. Step 6: Final answer
    x = 165.29

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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.