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Finding the Fourth Proportional to 223.79, 335.16 and 191.12

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Solution

The fourth proportional to 223.79, 335.16 and 191.12 is: 286.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.79 : 335.16 = 191.12 : x
  2. Step 2: Convert to fraction form
    223.79/335.16 = 191.12/x
  3. Step 3: Cross multiply
    223.79x = 335.16 × 191.12
  4. Step 4: Simplify right side
    223.79x = 64,054.10
  5. Step 5: Solve for x
    x = 64,054.10/223.79
  6. Step 6: Final answer
    x = 286.23

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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.