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Finding the Fourth Proportional to 141.59, 213.66 and 136.51

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Solution

The fourth proportional to 141.59, 213.66 and 136.51 is: 205.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.59 : 213.66 = 136.51 : x
  2. Step 2: Convert to fraction form
    141.59/213.66 = 136.51/x
  3. Step 3: Cross multiply
    141.59x = 213.66 × 136.51
  4. Step 4: Simplify right side
    141.59x = 29,166.70
  5. Step 5: Solve for x
    x = 29,166.70/141.59
  6. Step 6: Final answer
    x = 205.99

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.