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Finding the Fourth Proportional to 192.30, 287.19 and 168

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Solution

The fourth proportional to 192.30, 287.19 and 168 is: 250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.30 : 287.19 = 168 : x
  2. Step 2: Convert to fraction form
    192.30/287.19 = 168/x
  3. Step 3: Cross multiply
    192.30x = 287.19 × 168
  4. Step 4: Simplify right side
    192.30x = 48,247.92
  5. Step 5: Solve for x
    x = 48,247.92/192.30
  6. Step 6: Final answer
    x = 250.90

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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.