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Finding the Fourth Proportional to 491.20, 736.62 and 166.48

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Solution

The fourth proportional to 491.20, 736.62 and 166.48 is: 249.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.20 : 736.62 = 166.48 : x
  2. Step 2: Convert to fraction form
    491.20/736.62 = 166.48/x
  3. Step 3: Cross multiply
    491.20x = 736.62 × 166.48
  4. Step 4: Simplify right side
    491.20x = 122,632.50
  5. Step 5: Solve for x
    x = 122,632.50/491.20
  6. Step 6: Final answer
    x = 249.66

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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.