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Finding the Fourth Proportional to 369.31, 513.22 and 364.72

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Solution

The fourth proportional to 369.31, 513.22 and 364.72 is: 506.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    369.31 : 513.22 = 364.72 : x
  2. Step 2: Convert to fraction form
    369.31/513.22 = 364.72/x
  3. Step 3: Cross multiply
    369.31x = 513.22 × 364.72
  4. Step 4: Simplify right side
    369.31x = 187,181.60
  5. Step 5: Solve for x
    x = 187,181.60/369.31
  6. Step 6: Final answer
    x = 506.84

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.