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Finding the Fourth Proportional to 442.23, 610.28 and 245.76

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Solution

The fourth proportional to 442.23, 610.28 and 245.76 is: 339.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.23 : 610.28 = 245.76 : x
  2. Step 2: Convert to fraction form
    442.23/610.28 = 245.76/x
  3. Step 3: Cross multiply
    442.23x = 610.28 × 245.76
  4. Step 4: Simplify right side
    442.23x = 149,982.41
  5. Step 5: Solve for x
    x = 149,982.41/442.23
  6. Step 6: Final answer
    x = 339.15

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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.