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Finding the Fourth Proportional to 442.44, 610.92 and 393.48

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Solution

The fourth proportional to 442.44, 610.92 and 393.48 is: 543.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.44 : 610.92 = 393.48 : x
  2. Step 2: Convert to fraction form
    442.44/610.92 = 393.48/x
  3. Step 3: Cross multiply
    442.44x = 610.92 × 393.48
  4. Step 4: Simplify right side
    442.44x = 240,384.80
  5. Step 5: Solve for x
    x = 240,384.80/442.44
  6. Step 6: Final answer
    x = 543.32

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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.