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Finding the Fourth Proportional to 110.43, 151.30 and 108.91

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Solution

The fourth proportional to 110.43, 151.30 and 108.91 is: 149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.43 : 151.30 = 108.91 : x
  2. Step 2: Convert to fraction form
    110.43/151.30 = 108.91/x
  3. Step 3: Cross multiply
    110.43x = 151.30 × 108.91
  4. Step 4: Simplify right side
    110.43x = 16,477.54
  5. Step 5: Solve for x
    x = 16,477.54/110.43
  6. Step 6: Final answer
    x = 149.22

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.