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Finding the Fourth Proportional to 442.13, 610.07 and 245.61

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Solution

The fourth proportional to 442.13, 610.07 and 245.61 is: 338.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.13 : 610.07 = 245.61 : x
  2. Step 2: Convert to fraction form
    442.13/610.07 = 245.61/x
  3. Step 3: Cross multiply
    442.13x = 610.07 × 245.61
  4. Step 4: Simplify right side
    442.13x = 149,838.06
  5. Step 5: Solve for x
    x = 149,838.06/442.13
  6. Step 6: Final answer
    x = 338.90

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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.