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Finding the Fourth Proportional to 192.79, 265.99 and 109.84

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Solution

The fourth proportional to 192.79, 265.99 and 109.84 is: 151.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.79 : 265.99 = 109.84 : x
  2. Step 2: Convert to fraction form
    192.79/265.99 = 109.84/x
  3. Step 3: Cross multiply
    192.79x = 265.99 × 109.84
  4. Step 4: Simplify right side
    192.79x = 29,215.95
  5. Step 5: Solve for x
    x = 29,215.95/192.79
  6. Step 6: Final answer
    x = 151.54

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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.