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Finding the Fourth Proportional to 223.23, 308.14 and 199.87

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Solution

The fourth proportional to 223.23, 308.14 and 199.87 is: 275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.23 : 308.14 = 199.87 : x
  2. Step 2: Convert to fraction form
    223.23/308.14 = 199.87/x
  3. Step 3: Cross multiply
    223.23x = 308.14 × 199.87
  4. Step 4: Simplify right side
    223.23x = 61,588.21
  5. Step 5: Solve for x
    x = 61,588.21/223.23
  6. Step 6: Final answer
    x = 275.90

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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.