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Finding the Fourth Proportional to 151.67, 209.59 and 144.18

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Solution

The fourth proportional to 151.67, 209.59 and 144.18 is: 199.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.67 : 209.59 = 144.18 : x
  2. Step 2: Convert to fraction form
    151.67/209.59 = 144.18/x
  3. Step 3: Cross multiply
    151.67x = 209.59 × 144.18
  4. Step 4: Simplify right side
    151.67x = 30,218.33
  5. Step 5: Solve for x
    x = 30,218.33/151.67
  6. Step 6: Final answer
    x = 199.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.