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Finding the Fourth Proportional to 242.80, 363.60 and 201.92

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Solution

The fourth proportional to 242.80, 363.60 and 201.92 is: 302.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.80 : 363.60 = 201.92 : x
  2. Step 2: Convert to fraction form
    242.80/363.60 = 201.92/x
  3. Step 3: Cross multiply
    242.80x = 363.60 × 201.92
  4. Step 4: Simplify right side
    242.80x = 73,418.11
  5. Step 5: Solve for x
    x = 73,418.11/242.80
  6. Step 6: Final answer
    x = 302.38

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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.