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Finding the Fourth Proportional to 141.37, 211.97 and 68.22

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Solution

The fourth proportional to 141.37, 211.97 and 68.22 is: 102.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.37 : 211.97 = 68.22 : x
  2. Step 2: Convert to fraction form
    141.37/211.97 = 68.22/x
  3. Step 3: Cross multiply
    141.37x = 211.97 × 68.22
  4. Step 4: Simplify right side
    141.37x = 14,460.25
  5. Step 5: Solve for x
    x = 14,460.25/141.37
  6. Step 6: Final answer
    x = 102.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.