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Finding the Fourth Proportional to 217.33, 299.87 and 143.52

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Solution

The fourth proportional to 217.33, 299.87 and 143.52 is: 198.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.33 : 299.87 = 143.52 : x
  2. Step 2: Convert to fraction form
    217.33/299.87 = 143.52/x
  3. Step 3: Cross multiply
    217.33x = 299.87 × 143.52
  4. Step 4: Simplify right side
    217.33x = 43,037.34
  5. Step 5: Solve for x
    x = 43,037.34/217.33
  6. Step 6: Final answer
    x = 198.03

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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.