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Finding the Fourth Proportional to 192.19, 287.03 and 153.73

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Solution

The fourth proportional to 192.19, 287.03 and 153.73 is: 229.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.19 : 287.03 = 153.73 : x
  2. Step 2: Convert to fraction form
    192.19/287.03 = 153.73/x
  3. Step 3: Cross multiply
    192.19x = 287.03 × 153.73
  4. Step 4: Simplify right side
    192.19x = 44,125.12
  5. Step 5: Solve for x
    x = 44,125.12/192.19
  6. Step 6: Final answer
    x = 229.59

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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.