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Finding the Fourth Proportional to 203.76, 304.92 and 192.24

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Solution

The fourth proportional to 203.76, 304.92 and 192.24 is: 287.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.76 : 304.92 = 192.24 : x
  2. Step 2: Convert to fraction form
    203.76/304.92 = 192.24/x
  3. Step 3: Cross multiply
    203.76x = 304.92 × 192.24
  4. Step 4: Simplify right side
    203.76x = 58,617.82
  5. Step 5: Solve for x
    x = 58,617.82/203.76
  6. Step 6: Final answer
    x = 287.68

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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.