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Finding the Fourth Proportional to 442.79, 611.06 and 246.31

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Solution

The fourth proportional to 442.79, 611.06 and 246.31 is: 339.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.79 : 611.06 = 246.31 : x
  2. Step 2: Convert to fraction form
    442.79/611.06 = 246.31/x
  3. Step 3: Cross multiply
    442.79x = 611.06 × 246.31
  4. Step 4: Simplify right side
    442.79x = 150,505.90
  5. Step 5: Solve for x
    x = 150,505.90/442.79
  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.