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Finding the Fourth Proportional to 442.10, 610.07 and 245.64

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Solution

The fourth proportional to 442.10, 610.07 and 245.64 is: 338.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.10 : 610.07 = 245.64 : x
  2. Step 2: Convert to fraction form
    442.10/610.07 = 245.64/x
  3. Step 3: Cross multiply
    442.10x = 610.07 × 245.64
  4. Step 4: Simplify right side
    442.10x = 149,857.59
  5. Step 5: Solve for x
    x = 149,857.59/442.10
  6. Step 6: Final answer
    x = 338.97

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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.