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Finding the Fourth Proportional to 223.90, 335.80 and 191.41

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Solution

The fourth proportional to 223.90, 335.80 and 191.41 is: 287.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.90 : 335.80 = 191.41 : x
  2. Step 2: Convert to fraction form
    223.90/335.80 = 191.41/x
  3. Step 3: Cross multiply
    223.90x = 335.80 × 191.41
  4. Step 4: Simplify right side
    223.90x = 64,275.48
  5. Step 5: Solve for x
    x = 64,275.48/223.90
  6. Step 6: Final answer
    x = 287.07

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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.