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Finding the Fourth Proportional to 409.05, 612.66 and 246.39

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Solution

The fourth proportional to 409.05, 612.66 and 246.39 is: 369.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.05 : 612.66 = 246.39 : x
  2. Step 2: Convert to fraction form
    409.05/612.66 = 246.39/x
  3. Step 3: Cross multiply
    409.05x = 612.66 × 246.39
  4. Step 4: Simplify right side
    409.05x = 150,955.37
  5. Step 5: Solve for x
    x = 150,955.37/409.05
  6. Step 6: Final answer
    x = 369.04

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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.