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Finding the Fourth Proportional to 213.55, 294.66 and 134.97

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Solution

The fourth proportional to 213.55, 294.66 and 134.97 is: 186.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.55 : 294.66 = 134.97 : x
  2. Step 2: Convert to fraction form
    213.55/294.66 = 134.97/x
  3. Step 3: Cross multiply
    213.55x = 294.66 × 134.97
  4. Step 4: Simplify right side
    213.55x = 39,769.16
  5. Step 5: Solve for x
    x = 39,769.16/213.55
  6. Step 6: Final answer
    x = 186.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.