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Finding the Fourth Proportional to 408.68, 612.09 and 246.03

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Solution

The fourth proportional to 408.68, 612.09 and 246.03 is: 368.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    408.68 : 612.09 = 246.03 : x
  2. Step 2: Convert to fraction form
    408.68/612.09 = 246.03/x
  3. Step 3: Cross multiply
    408.68x = 612.09 × 246.03
  4. Step 4: Simplify right side
    408.68x = 150,592.50
  5. Step 5: Solve for x
    x = 150,592.50/408.68
  6. Step 6: Final answer
    x = 368.49

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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.