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Finding the Fourth Proportional to 409.87, 614.92 and 166.57

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Solution

The fourth proportional to 409.87, 614.92 and 166.57 is: 249.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.87 : 614.92 = 166.57 : x
  2. Step 2: Convert to fraction form
    409.87/614.92 = 166.57/x
  3. Step 3: Cross multiply
    409.87x = 614.92 × 166.57
  4. Step 4: Simplify right side
    409.87x = 102,427.22
  5. Step 5: Solve for x
    x = 102,427.22/409.87
  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.