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Finding the Fourth Proportional to 372.36, 513.82 and 206.54

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Solution

The fourth proportional to 372.36, 513.82 and 206.54 is: 285.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    372.36 : 513.82 = 206.54 : x
  2. Step 2: Convert to fraction form
    372.36/513.82 = 206.54/x
  3. Step 3: Cross multiply
    372.36x = 513.82 × 206.54
  4. Step 4: Simplify right side
    372.36x = 106,125.54
  5. Step 5: Solve for x
    x = 106,125.54/372.36
  6. Step 6: Final answer
    x = 285.01

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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.