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Finding the Fourth Proportional to 442.76, 610.92 and 376.64

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Solution

The fourth proportional to 442.76, 610.92 and 376.64 is: 519.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    442.76 : 610.92 = 376.64 : x
  2. Step 2: Convert to fraction form
    442.76/610.92 = 376.64/x
  3. Step 3: Cross multiply
    442.76x = 610.92 × 376.64
  4. Step 4: Simplify right side
    442.76x = 230,096.91
  5. Step 5: Solve for x
    x = 230,096.91/442.76
  6. Step 6: Final answer
    x = 519.69

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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.