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Finding the Fourth Proportional to 201.48, 300.78 and 192.62

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Solution

The fourth proportional to 201.48, 300.78 and 192.62 is: 287.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201.48 : 300.78 = 192.62 : x
  2. Step 2: Convert to fraction form
    201.48/300.78 = 192.62/x
  3. Step 3: Cross multiply
    201.48x = 300.78 × 192.62
  4. Step 4: Simplify right side
    201.48x = 57,936.24
  5. Step 5: Solve for x
    x = 57,936.24/201.48
  6. Step 6: Final answer
    x = 287.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.