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Finding the Fourth Proportional to 223.35, 308.04 and 168.21

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Solution

The fourth proportional to 223.35, 308.04 and 168.21 is: 231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.35 : 308.04 = 168.21 : x
  2. Step 2: Convert to fraction form
    223.35/308.04 = 168.21/x
  3. Step 3: Cross multiply
    223.35x = 308.04 × 168.21
  4. Step 4: Simplify right side
    223.35x = 51,815.41
  5. Step 5: Solve for x
    x = 51,815.41/223.35
  6. Step 6: Final answer
    x = 231.99

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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.