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Finding the Fourth Proportional to 192.72, 289.37 and 170.08

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Solution

The fourth proportional to 192.72, 289.37 and 170.08 is: 255.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.72 : 289.37 = 170.08 : x
  2. Step 2: Convert to fraction form
    192.72/289.37 = 170.08/x
  3. Step 3: Cross multiply
    192.72x = 289.37 × 170.08
  4. Step 4: Simplify right side
    192.72x = 49,216.05
  5. Step 5: Solve for x
    x = 49,216.05/192.72
  6. Step 6: Final answer
    x = 255.38

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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.