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Finding the Fourth Proportional to 273.42, 409.39 and 192.14

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Solution

The fourth proportional to 273.42, 409.39 and 192.14 is: 287.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    273.42 : 409.39 = 192.14 : x
  2. Step 2: Convert to fraction form
    273.42/409.39 = 192.14/x
  3. Step 3: Cross multiply
    273.42x = 409.39 × 192.14
  4. Step 4: Simplify right side
    273.42x = 78,660.19
  5. Step 5: Solve for x
    x = 78,660.19/273.42
  6. Step 6: Final answer
    x = 287.69

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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.