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Finding the Fourth Proportional to 312.09, 467.69 and 246.80

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Solution

The fourth proportional to 312.09, 467.69 and 246.80 is: 369.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.09 : 467.69 = 246.80 : x
  2. Step 2: Convert to fraction form
    312.09/467.69 = 246.80/x
  3. Step 3: Cross multiply
    312.09x = 467.69 × 246.80
  4. Step 4: Simplify right side
    312.09x = 115,427.68
  5. Step 5: Solve for x
    x = 115,427.68/312.09
  6. Step 6: Final answer
    x = 369.85

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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.