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Finding the Fourth Proportional to 200.47, 300.61 and 63.49

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Solution

The fourth proportional to 200.47, 300.61 and 63.49 is: 95.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.47 : 300.61 = 63.49 : x
  2. Step 2: Convert to fraction form
    200.47/300.61 = 63.49/x
  3. Step 3: Cross multiply
    200.47x = 300.61 × 63.49
  4. Step 4: Simplify right side
    200.47x = 19,085.73
  5. Step 5: Solve for x
    x = 19,085.73/200.47
  6. Step 6: Final answer
    x = 95.20

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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.