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Finding the Fourth Proportional to 143.04, 213.60 and 126.48

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Solution

The fourth proportional to 143.04, 213.60 and 126.48 is: 188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.04 : 213.60 = 126.48 : x
  2. Step 2: Convert to fraction form
    143.04/213.60 = 126.48/x
  3. Step 3: Cross multiply
    143.04x = 213.60 × 126.48
  4. Step 4: Simplify right side
    143.04x = 27,016.13
  5. Step 5: Solve for x
    x = 27,016.13/143.04
  6. Step 6: Final answer
    x = 188.87

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.