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Finding the Fourth Proportional to 213.26, 294.35 and 143.46

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Solution

The fourth proportional to 213.26, 294.35 and 143.46 is: 198.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    213.26 : 294.35 = 143.46 : x
  2. Step 2: Convert to fraction form
    213.26/294.35 = 143.46/x
  3. Step 3: Cross multiply
    213.26x = 294.35 × 143.46
  4. Step 4: Simplify right side
    213.26x = 42,226.73
  5. Step 5: Solve for x
    x = 42,226.73/213.26
  6. Step 6: Final answer
    x = 198.01

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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.