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Finding the Fourth Proportional to 409.62, 613.90 and 166.02

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Solution

The fourth proportional to 409.62, 613.90 and 166.02 is: 248.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.62 : 613.90 = 166.02 : x
  2. Step 2: Convert to fraction form
    409.62/613.90 = 166.02/x
  3. Step 3: Cross multiply
    409.62x = 613.90 × 166.02
  4. Step 4: Simplify right side
    409.62x = 101,916.65
  5. Step 5: Solve for x
    x = 101,916.65/409.62
  6. Step 6: Final answer
    x = 248.81

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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.