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Finding the Fourth Proportional to 242.37, 363.61 and 80.05

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Solution

The fourth proportional to 242.37, 363.61 and 80.05 is: 120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.37 : 363.61 = 80.05 : x
  2. Step 2: Convert to fraction form
    242.37/363.61 = 80.05/x
  3. Step 3: Cross multiply
    242.37x = 363.61 × 80.05
  4. Step 4: Simplify right side
    242.37x = 29,107.59
  5. Step 5: Solve for x
    x = 29,107.59/242.37
  6. Step 6: Final answer
    x = 120.10

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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.