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Finding the Fourth Proportional to 220.44, 304.20 and 133.05

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Solution

The fourth proportional to 220.44, 304.20 and 133.05 is: 183.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.44 : 304.20 = 133.05 : x
  2. Step 2: Convert to fraction form
    220.44/304.20 = 133.05/x
  3. Step 3: Cross multiply
    220.44x = 304.20 × 133.05
  4. Step 4: Simplify right side
    220.44x = 40,473.81
  5. Step 5: Solve for x
    x = 40,473.81/220.44
  6. Step 6: Final answer
    x = 183.60

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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.