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Finding the Fourth Proportional to 110.43, 151.43 and 99.48

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Solution

The fourth proportional to 110.43, 151.43 and 99.48 is: 136.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.43 : 151.43 = 99.48 : x
  2. Step 2: Convert to fraction form
    110.43/151.43 = 99.48/x
  3. Step 3: Cross multiply
    110.43x = 151.43 × 99.48
  4. Step 4: Simplify right side
    110.43x = 15,064.51
  5. Step 5: Solve for x
    x = 15,064.51/110.43
  6. Step 6: Final answer
    x = 136.42

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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.