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Finding the Fourth Proportional to 372.39, 513.72 and 246.30

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Solution

The fourth proportional to 372.39, 513.72 and 246.30 is: 339.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.39 : 513.72 = 246.30 : x
  2. Step 2: Convert to fraction form
    372.39/513.72 = 246.30/x
  3. Step 3: Cross multiply
    372.39x = 513.72 × 246.30
  4. Step 4: Simplify right side
    372.39x = 126,529.24
  5. Step 5: Solve for x
    x = 126,529.24/372.39
  6. Step 6: Final answer
    x = 339.78

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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.