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Finding the Fourth Proportional to 372.72, 514.28 and 206.94

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Solution

The fourth proportional to 372.72, 514.28 and 206.94 is: 285.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.72 : 514.28 = 206.94 : x
  2. Step 2: Convert to fraction form
    372.72/514.28 = 206.94/x
  3. Step 3: Cross multiply
    372.72x = 514.28 × 206.94
  4. Step 4: Simplify right side
    372.72x = 106,425.10
  5. Step 5: Solve for x
    x = 106,425.10/372.72
  6. Step 6: Final answer
    x = 285.54

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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.