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Finding the Fourth Proportional to 141.27, 211.89 and 141.27

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Solution

The fourth proportional to 141.27, 211.89 and 141.27 is: 211.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.27 : 211.89 = 141.27 : x
  2. Step 2: Convert to fraction form
    141.27/211.89 = 141.27/x
  3. Step 3: Cross multiply
    141.27x = 211.89 × 141.27
  4. Step 4: Simplify right side
    141.27x = 29,933.70
  5. Step 5: Solve for x
    x = 29,933.70/141.27
  6. Step 6: Final answer
    x = 211.89

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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.