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Finding the Fourth Proportional to 198.36, 297.51 and 88.56

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Solution

The fourth proportional to 198.36, 297.51 and 88.56 is: 132.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.36 : 297.51 = 88.56 : x
  2. Step 2: Convert to fraction form
    198.36/297.51 = 88.56/x
  3. Step 3: Cross multiply
    198.36x = 297.51 × 88.56
  4. Step 4: Simplify right side
    198.36x = 26,347.49
  5. Step 5: Solve for x
    x = 26,347.49/198.36
  6. Step 6: Final answer
    x = 132.83

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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.