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Finding the Fourth Proportional to 442.39, 610.49 and 245.90

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Solution

The fourth proportional to 442.39, 610.49 and 245.90 is: 339.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.39 : 610.49 = 245.90 : x
  2. Step 2: Convert to fraction form
    442.39/610.49 = 245.90/x
  3. Step 3: Cross multiply
    442.39x = 610.49 × 245.90
  4. Step 4: Simplify right side
    442.39x = 150,119.49
  5. Step 5: Solve for x
    x = 150,119.49/442.39
  6. Step 6: Final answer
    x = 339.34

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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.