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Finding the Fourth Proportional to 372.08, 513.45 and 206.30

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Solution

The fourth proportional to 372.08, 513.45 and 206.30 is: 284.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.08 : 513.45 = 206.30 : x
  2. Step 2: Convert to fraction form
    372.08/513.45 = 206.30/x
  3. Step 3: Cross multiply
    372.08x = 513.45 × 206.30
  4. Step 4: Simplify right side
    372.08x = 105,922.17
  5. Step 5: Solve for x
    x = 105,922.17/372.08
  6. Step 6: Final answer
    x = 284.68

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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.