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Finding the Fourth Proportional to 200.63, 300.15 and 159.63

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Solution

The fourth proportional to 200.63, 300.15 and 159.63 is: 238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.63 : 300.15 = 159.63 : x
  2. Step 2: Convert to fraction form
    200.63/300.15 = 159.63/x
  3. Step 3: Cross multiply
    200.63x = 300.15 × 159.63
  4. Step 4: Simplify right side
    200.63x = 47,912.94
  5. Step 5: Solve for x
    x = 47,912.94/200.63
  6. Step 6: Final answer
    x = 238.81

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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.