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Finding the Fourth Proportional to 223.38, 336.03 and 191.70

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Solution

The fourth proportional to 223.38, 336.03 and 191.70 is: 288.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.38 : 336.03 = 191.70 : x
  2. Step 2: Convert to fraction form
    223.38/336.03 = 191.70/x
  3. Step 3: Cross multiply
    223.38x = 336.03 × 191.70
  4. Step 4: Simplify right side
    223.38x = 64,416.95
  5. Step 5: Solve for x
    x = 64,416.95/223.38
  6. Step 6: Final answer
    x = 288.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.