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Finding the Fourth Proportional to 118.33, 176.53 and 109.23

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Solution

The fourth proportional to 118.33, 176.53 and 109.23 is: 162.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.33 : 176.53 = 109.23 : x
  2. Step 2: Convert to fraction form
    118.33/176.53 = 109.23/x
  3. Step 3: Cross multiply
    118.33x = 176.53 × 109.23
  4. Step 4: Simplify right side
    118.33x = 19,282.37
  5. Step 5: Solve for x
    x = 19,282.37/118.33
  6. Step 6: Final answer
    x = 162.95

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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.