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Finding the Fourth Proportional to 339.32, 508.44 and 248.18

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Solution

The fourth proportional to 339.32, 508.44 and 248.18 is: 371.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.32 : 508.44 = 248.18 : x
  2. Step 2: Convert to fraction form
    339.32/508.44 = 248.18/x
  3. Step 3: Cross multiply
    339.32x = 508.44 × 248.18
  4. Step 4: Simplify right side
    339.32x = 126,184.64
  5. Step 5: Solve for x
    x = 126,184.64/339.32
  6. Step 6: Final answer
    x = 371.88

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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.