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Finding the Fourth Proportional to 339.08, 508 and 216.92

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Solution

The fourth proportional to 339.08, 508 and 216.92 is: 324.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.08 : 508 = 216.92 : x
  2. Step 2: Convert to fraction form
    339.08/508 = 216.92/x
  3. Step 3: Cross multiply
    339.08x = 508 × 216.92
  4. Step 4: Simplify right side
    339.08x = 110,195.36
  5. Step 5: Solve for x
    x = 110,195.36/339.08
  6. Step 6: Final answer
    x = 324.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.