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Finding the Fourth Proportional to 612.21, 844.76 and 372.82

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Solution

The fourth proportional to 612.21, 844.76 and 372.82 is: 514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.21 : 844.76 = 372.82 : x
  2. Step 2: Convert to fraction form
    612.21/844.76 = 372.82/x
  3. Step 3: Cross multiply
    612.21x = 844.76 × 372.82
  4. Step 4: Simplify right side
    612.21x = 314,942.24
  5. Step 5: Solve for x
    x = 314,942.24/612.21
  6. Step 6: Final answer
    x = 514.43

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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.