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Finding the Fourth Proportional to 200.38, 300.54 and 63.42

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Solution

The fourth proportional to 200.38, 300.54 and 63.42 is: 95.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.38 : 300.54 = 63.42 : x
  2. Step 2: Convert to fraction form
    200.38/300.54 = 63.42/x
  3. Step 3: Cross multiply
    200.38x = 300.54 × 63.42
  4. Step 4: Simplify right side
    200.38x = 19,060.25
  5. Step 5: Solve for x
    x = 19,060.25/200.38
  6. Step 6: Final answer
    x = 95.12

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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.