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Finding the Fourth Proportional to 320.31, 441.50 and 246.60

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Solution

The fourth proportional to 320.31, 441.50 and 246.60 is: 339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.31 : 441.50 = 246.60 : x
  2. Step 2: Convert to fraction form
    320.31/441.50 = 246.60/x
  3. Step 3: Cross multiply
    320.31x = 441.50 × 246.60
  4. Step 4: Simplify right side
    320.31x = 108,872.67
  5. Step 5: Solve for x
    x = 108,872.67/320.31
  6. Step 6: Final answer
    x = 339.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.