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Finding the Fourth Proportional to 198.21, 297.21 and 95.36

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Solution

The fourth proportional to 198.21, 297.21 and 95.36 is: 142.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.21 : 297.21 = 95.36 : x
  2. Step 2: Convert to fraction form
    198.21/297.21 = 95.36/x
  3. Step 3: Cross multiply
    198.21x = 297.21 × 95.36
  4. Step 4: Simplify right side
    198.21x = 28,339.98
  5. Step 5: Solve for x
    x = 28,339.98/198.21
  6. Step 6: Final answer
    x = 142.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.