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Finding the Fourth Proportional to 223.18, 308.11 and 164.12

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Solution

The fourth proportional to 223.18, 308.11 and 164.12 is: 226.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.18 : 308.11 = 164.12 : x
  2. Step 2: Convert to fraction form
    223.18/308.11 = 164.12/x
  3. Step 3: Cross multiply
    223.18x = 308.11 × 164.12
  4. Step 4: Simplify right side
    223.18x = 50,565.06
  5. Step 5: Solve for x
    x = 50,565.06/223.18
  6. Step 6: Final answer
    x = 226.57

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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.