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Finding the Fourth Proportional to 220.29, 304.02 and 141.66

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Solution

The fourth proportional to 220.29, 304.02 and 141.66 is: 195.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220.29 : 304.02 = 141.66 : x
  2. Step 2: Convert to fraction form
    220.29/304.02 = 141.66/x
  3. Step 3: Cross multiply
    220.29x = 304.02 × 141.66
  4. Step 4: Simplify right side
    220.29x = 43,067.47
  5. Step 5: Solve for x
    x = 43,067.47/220.29
  6. Step 6: Final answer
    x = 195.50

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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.