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Finding the Fourth Proportional to 166.07, 249.24 and 79.49

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Solution

The fourth proportional to 166.07, 249.24 and 79.49 is: 119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.07 : 249.24 = 79.49 : x
  2. Step 2: Convert to fraction form
    166.07/249.24 = 79.49/x
  3. Step 3: Cross multiply
    166.07x = 249.24 × 79.49
  4. Step 4: Simplify right side
    166.07x = 19,812.09
  5. Step 5: Solve for x
    x = 19,812.09/166.07
  6. Step 6: Final answer
    x = 119.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.