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Finding the Fourth Proportional to 442.06, 609.94 and 245.54

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Solution

The fourth proportional to 442.06, 609.94 and 245.54 is: 338.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.06 : 609.94 = 245.54 : x
  2. Step 2: Convert to fraction form
    442.06/609.94 = 245.54/x
  3. Step 3: Cross multiply
    442.06x = 609.94 × 245.54
  4. Step 4: Simplify right side
    442.06x = 149,764.67
  5. Step 5: Solve for x
    x = 149,764.67/442.06
  6. Step 6: Final answer
    x = 338.79

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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.