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Finding the Fourth Proportional to 222.63, 335.19 and 203.51

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Solution

The fourth proportional to 222.63, 335.19 and 203.51 is: 306.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    222.63 : 335.19 = 203.51 : x
  2. Step 2: Convert to fraction form
    222.63/335.19 = 203.51/x
  3. Step 3: Cross multiply
    222.63x = 335.19 × 203.51
  4. Step 4: Simplify right side
    222.63x = 68,212.84
  5. Step 5: Solve for x
    x = 68,212.84/222.63
  6. Step 6: Final answer
    x = 306.40

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.