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Finding the Fourth Proportional to 202.78, 304.14 and 192.52

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Solution

The fourth proportional to 202.78, 304.14 and 192.52 is: 288.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.78 : 304.14 = 192.52 : x
  2. Step 2: Convert to fraction form
    202.78/304.14 = 192.52/x
  3. Step 3: Cross multiply
    202.78x = 304.14 × 192.52
  4. Step 4: Simplify right side
    202.78x = 58,553.03
  5. Step 5: Solve for x
    x = 58,553.03/202.78
  6. Step 6: Final answer
    x = 288.75

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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.