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Finding the Fourth Proportional to 169.01, 233.26 and 99.11

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Solution

The fourth proportional to 169.01, 233.26 and 99.11 is: 136.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.01 : 233.26 = 99.11 : x
  2. Step 2: Convert to fraction form
    169.01/233.26 = 99.11/x
  3. Step 3: Cross multiply
    169.01x = 233.26 × 99.11
  4. Step 4: Simplify right side
    169.01x = 23,116.98
  5. Step 5: Solve for x
    x = 23,116.98/169.01
  6. Step 6: Final answer
    x = 136.78

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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.