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Finding the Fourth Proportional to 200.84, 300.76 and 168.12

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Solution

The fourth proportional to 200.84, 300.76 and 168.12 is: 251.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.84 : 300.76 = 168.12 : x
  2. Step 2: Convert to fraction form
    200.84/300.76 = 168.12/x
  3. Step 3: Cross multiply
    200.84x = 300.76 × 168.12
  4. Step 4: Simplify right side
    200.84x = 50,563.35
  5. Step 5: Solve for x
    x = 50,563.35/200.84
  6. Step 6: Final answer
    x = 251.77

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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.