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Finding the Fourth Proportional to 491.20, 736.97 and 166.79

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Solution

The fourth proportional to 491.20, 736.97 and 166.79 is: 250.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.20 : 736.97 = 166.79 : x
  2. Step 2: Convert to fraction form
    491.20/736.97 = 166.79/x
  3. Step 3: Cross multiply
    491.20x = 736.97 × 166.79
  4. Step 4: Simplify right side
    491.20x = 122,920.23
  5. Step 5: Solve for x
    x = 122,920.23/491.20
  6. Step 6: Final answer
    x = 250.25

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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.