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Finding the Fourth Proportional to 110.53, 165.14 and 105.49

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Solution

The fourth proportional to 110.53, 165.14 and 105.49 is: 157.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.53 : 165.14 = 105.49 : x
  2. Step 2: Convert to fraction form
    110.53/165.14 = 105.49/x
  3. Step 3: Cross multiply
    110.53x = 165.14 × 105.49
  4. Step 4: Simplify right side
    110.53x = 17,420.62
  5. Step 5: Solve for x
    x = 17,420.62/110.53
  6. Step 6: Final answer
    x = 157.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.