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Finding the Fourth Proportional to 192.16, 265.05 and 136.96

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Solution

The fourth proportional to 192.16, 265.05 and 136.96 is: 188.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.16 : 265.05 = 136.96 : x
  2. Step 2: Convert to fraction form
    192.16/265.05 = 136.96/x
  3. Step 3: Cross multiply
    192.16x = 265.05 × 136.96
  4. Step 4: Simplify right side
    192.16x = 36,301.25
  5. Step 5: Solve for x
    x = 36,301.25/192.16
  6. Step 6: Final answer
    x = 188.91

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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.