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Finding the Fourth Proportional to 192.48, 265.72 and 122.60

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Solution

The fourth proportional to 192.48, 265.72 and 122.60 is: 169.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.48 : 265.72 = 122.60 : x
  2. Step 2: Convert to fraction form
    192.48/265.72 = 122.60/x
  3. Step 3: Cross multiply
    192.48x = 265.72 × 122.60
  4. Step 4: Simplify right side
    192.48x = 32,577.27
  5. Step 5: Solve for x
    x = 32,577.27/192.48
  6. Step 6: Final answer
    x = 169.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.