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Finding the Fourth Proportional to 192.79, 265.26 and 187.66

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Solution

The fourth proportional to 192.79, 265.26 and 187.66 is: 258.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.79 : 265.26 = 187.66 : x
  2. Step 2: Convert to fraction form
    192.79/265.26 = 187.66/x
  3. Step 3: Cross multiply
    192.79x = 265.26 × 187.66
  4. Step 4: Simplify right side
    192.79x = 49,778.69
  5. Step 5: Solve for x
    x = 49,778.69/192.79
  6. Step 6: Final answer
    x = 258.20

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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.