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Finding the Fourth Proportional to 192.56, 288.12 and 151.28

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Solution

The fourth proportional to 192.56, 288.12 and 151.28 is: 226.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.56 : 288.12 = 151.28 : x
  2. Step 2: Convert to fraction form
    192.56/288.12 = 151.28/x
  3. Step 3: Cross multiply
    192.56x = 288.12 × 151.28
  4. Step 4: Simplify right side
    192.56x = 43,586.79
  5. Step 5: Solve for x
    x = 43,586.79/192.56
  6. Step 6: Final answer
    x = 226.35

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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.