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Finding the Fourth Proportional to 358.66, 538.19 and 166.29

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Solution

The fourth proportional to 358.66, 538.19 and 166.29 is: 249.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.66 : 538.19 = 166.29 : x
  2. Step 2: Convert to fraction form
    358.66/538.19 = 166.29/x
  3. Step 3: Cross multiply
    358.66x = 538.19 × 166.29
  4. Step 4: Simplify right side
    358.66x = 89,495.62
  5. Step 5: Solve for x
    x = 89,495.62/358.66
  6. Step 6: Final answer
    x = 249.53

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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.