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Finding the Fourth Proportional to 119.18, 164.37 and 82.28

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Solution

The fourth proportional to 119.18, 164.37 and 82.28 is: 113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.18 : 164.37 = 82.28 : x
  2. Step 2: Convert to fraction form
    119.18/164.37 = 82.28/x
  3. Step 3: Cross multiply
    119.18x = 164.37 × 82.28
  4. Step 4: Simplify right side
    119.18x = 13,524.36
  5. Step 5: Solve for x
    x = 13,524.36/119.18
  6. Step 6: Final answer
    x = 113.48

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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.