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Finding the Fourth Proportional to 339.26, 509.22 and 248.54

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Solution

The fourth proportional to 339.26, 509.22 and 248.54 is: 373.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.26 : 509.22 = 248.54 : x
  2. Step 2: Convert to fraction form
    339.26/509.22 = 248.54/x
  3. Step 3: Cross multiply
    339.26x = 509.22 × 248.54
  4. Step 4: Simplify right side
    339.26x = 126,558.99
  5. Step 5: Solve for x
    x = 126,558.99/339.26
  6. Step 6: Final answer
    x = 373.05

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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.