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Finding the Fourth Proportional to 164.80, 227.36 and 121.04

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Solution

The fourth proportional to 164.80, 227.36 and 121.04 is: 166.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    164.80 : 227.36 = 121.04 : x
  2. Step 2: Convert to fraction form
    164.80/227.36 = 121.04/x
  3. Step 3: Cross multiply
    164.80x = 227.36 × 121.04
  4. Step 4: Simplify right side
    164.80x = 27,519.65
  5. Step 5: Solve for x
    x = 27,519.65/164.80
  6. Step 6: Final answer
    x = 166.99

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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.