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Finding the Fourth Proportional to 223.76, 335.43 and 126.25

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Solution

The fourth proportional to 223.76, 335.43 and 126.25 is: 189.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.76 : 335.43 = 126.25 : x
  2. Step 2: Convert to fraction form
    223.76/335.43 = 126.25/x
  3. Step 3: Cross multiply
    223.76x = 335.43 × 126.25
  4. Step 4: Simplify right side
    223.76x = 42,347.20
  5. Step 5: Solve for x
    x = 42,347.20/223.76
  6. Step 6: Final answer
    x = 189.25

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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.