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Finding the Fourth Proportional to 143.02, 195.95 and 141.22

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Solution

The fourth proportional to 143.02, 195.95 and 141.22 is: 193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143.02 : 195.95 = 141.22 : x
  2. Step 2: Convert to fraction form
    143.02/195.95 = 141.22/x
  3. Step 3: Cross multiply
    143.02x = 195.95 × 141.22
  4. Step 4: Simplify right side
    143.02x = 27,672.06
  5. Step 5: Solve for x
    x = 27,672.06/143.02
  6. Step 6: Final answer
    x = 193.48

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.