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Finding the Fourth Proportional to 192.24, 286.74 and 169.16

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Solution

The fourth proportional to 192.24, 286.74 and 169.16 is: 252.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.24 : 286.74 = 169.16 : x
  2. Step 2: Convert to fraction form
    192.24/286.74 = 169.16/x
  3. Step 3: Cross multiply
    192.24x = 286.74 × 169.16
  4. Step 4: Simplify right side
    192.24x = 48,503.50
  5. Step 5: Solve for x
    x = 48,503.50/192.24
  6. Step 6: Final answer
    x = 252.31

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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.