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Finding the Fourth Proportional to 200.20, 300.32 and 108.63

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Solution

The fourth proportional to 200.20, 300.32 and 108.63 is: 162.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.20 : 300.32 = 108.63 : x
  2. Step 2: Convert to fraction form
    200.20/300.32 = 108.63/x
  3. Step 3: Cross multiply
    200.20x = 300.32 × 108.63
  4. Step 4: Simplify right side
    200.20x = 32,623.76
  5. Step 5: Solve for x
    x = 32,623.76/200.20
  6. Step 6: Final answer
    x = 162.96

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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.