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Finding the Fourth Proportional to 220.04, 303.66 and 126.79

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Solution

The fourth proportional to 220.04, 303.66 and 126.79 is: 174.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.04 : 303.66 = 126.79 : x
  2. Step 2: Convert to fraction form
    220.04/303.66 = 126.79/x
  3. Step 3: Cross multiply
    220.04x = 303.66 × 126.79
  4. Step 4: Simplify right side
    220.04x = 38,501.05
  5. Step 5: Solve for x
    x = 38,501.05/220.04
  6. Step 6: Final answer
    x = 174.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.