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Finding the Fourth Proportional to 141.65, 211.25 and 133.97

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Solution

The fourth proportional to 141.65, 211.25 and 133.97 is: 199.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.65 : 211.25 = 133.97 : x
  2. Step 2: Convert to fraction form
    141.65/211.25 = 133.97/x
  3. Step 3: Cross multiply
    141.65x = 211.25 × 133.97
  4. Step 4: Simplify right side
    141.65x = 28,301.02
  5. Step 5: Solve for x
    x = 28,301.02/141.65
  6. Step 6: Final answer
    x = 199.79

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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.