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Finding the Fourth Proportional to 223.23, 308.10 and 216.39

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Solution

The fourth proportional to 223.23, 308.10 and 216.39 is: 298.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.23 : 308.10 = 216.39 : x
  2. Step 2: Convert to fraction form
    223.23/308.10 = 216.39/x
  3. Step 3: Cross multiply
    223.23x = 308.10 × 216.39
  4. Step 4: Simplify right side
    223.23x = 66,669.76
  5. Step 5: Solve for x
    x = 66,669.76/223.23
  6. Step 6: Final answer
    x = 298.66

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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.