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Finding the Fourth Proportional to 442.78, 611.01 and 246.28

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Solution

The fourth proportional to 442.78, 611.01 and 246.28 is: 339.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.78 : 611.01 = 246.28 : x
  2. Step 2: Convert to fraction form
    442.78/611.01 = 246.28/x
  3. Step 3: Cross multiply
    442.78x = 611.01 × 246.28
  4. Step 4: Simplify right side
    442.78x = 150,479.54
  5. Step 5: Solve for x
    x = 150,479.54/442.78
  6. Step 6: Final answer
    x = 339.85

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