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Finding the Fourth Proportional to 612.24, 844.48 and 379.48

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Solution

The fourth proportional to 612.24, 844.48 and 379.48 is: 523.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.24 : 844.48 = 379.48 : x
  2. Step 2: Convert to fraction form
    612.24/844.48 = 379.48/x
  3. Step 3: Cross multiply
    612.24x = 844.48 × 379.48
  4. Step 4: Simplify right side
    612.24x = 320,463.27
  5. Step 5: Solve for x
    x = 320,463.27/612.24
  6. Step 6: Final answer
    x = 523.43

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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.