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Finding the Fourth Proportional to 339.04, 506.12 and 308.80

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Solution

The fourth proportional to 339.04, 506.12 and 308.80 is: 460.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.04 : 506.12 = 308.80 : x
  2. Step 2: Convert to fraction form
    339.04/506.12 = 308.80/x
  3. Step 3: Cross multiply
    339.04x = 506.12 × 308.80
  4. Step 4: Simplify right side
    339.04x = 156,289.86
  5. Step 5: Solve for x
    x = 156,289.86/339.04
  6. Step 6: Final answer
    x = 460.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.