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Finding the Fourth Proportional to 200.96, 300.82 and 155.20

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Solution

The fourth proportional to 200.96, 300.82 and 155.20 is: 232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.96 : 300.82 = 155.20 : x
  2. Step 2: Convert to fraction form
    200.96/300.82 = 155.20/x
  3. Step 3: Cross multiply
    200.96x = 300.82 × 155.20
  4. Step 4: Simplify right side
    200.96x = 46,687.26
  5. Step 5: Solve for x
    x = 46,687.26/200.96
  6. Step 6: Final answer
    x = 232.32

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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.