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Finding the Fourth Proportional to 322.78, 483.44 and 200.84

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Solution

The fourth proportional to 322.78, 483.44 and 200.84 is: 300.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.78 : 483.44 = 200.84 : x
  2. Step 2: Convert to fraction form
    322.78/483.44 = 200.84/x
  3. Step 3: Cross multiply
    322.78x = 483.44 × 200.84
  4. Step 4: Simplify right side
    322.78x = 97,094.09
  5. Step 5: Solve for x
    x = 97,094.09/322.78
  6. Step 6: Final answer
    x = 300.81

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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.