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Finding the Fourth Proportional to 491.58, 736.89 and 166.71

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Solution

The fourth proportional to 491.58, 736.89 and 166.71 is: 249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    491.58 : 736.89 = 166.71 : x
  2. Step 2: Convert to fraction form
    491.58/736.89 = 166.71/x
  3. Step 3: Cross multiply
    491.58x = 736.89 × 166.71
  4. Step 4: Simplify right side
    491.58x = 122,846.93
  5. Step 5: Solve for x
    x = 122,846.93/491.58
  6. Step 6: Final answer
    x = 249.90

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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.