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Finding the Fourth Proportional to 198.52, 297.51 and 147.35

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Solution

The fourth proportional to 198.52, 297.51 and 147.35 is: 220.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    198.52 : 297.51 = 147.35 : x
  2. Step 2: Convert to fraction form
    198.52/297.51 = 147.35/x
  3. Step 3: Cross multiply
    198.52x = 297.51 × 147.35
  4. Step 4: Simplify right side
    198.52x = 43,838.29
  5. Step 5: Solve for x
    x = 43,838.29/198.52
  6. Step 6: Final answer
    x = 220.83

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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.