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Finding the Fourth Proportional to 118.44, 176.63 and 105.33

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Solution

The fourth proportional to 118.44, 176.63 and 105.33 is: 157.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.44 : 176.63 = 105.33 : x
  2. Step 2: Convert to fraction form
    118.44/176.63 = 105.33/x
  3. Step 3: Cross multiply
    118.44x = 176.63 × 105.33
  4. Step 4: Simplify right side
    118.44x = 18,603.03
  5. Step 5: Solve for x
    x = 18,603.03/118.44
  6. Step 6: Final answer
    x = 157.07

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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.