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Finding the Fourth Proportional to 339.44, 506.13 and 312.84

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Solution

The fourth proportional to 339.44, 506.13 and 312.84 is: 466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.44 : 506.13 = 312.84 : x
  2. Step 2: Convert to fraction form
    339.44/506.13 = 312.84/x
  3. Step 3: Cross multiply
    339.44x = 506.13 × 312.84
  4. Step 4: Simplify right side
    339.44x = 158,336.54
  5. Step 5: Solve for x
    x = 158,336.54/339.44
  6. Step 6: Final answer
    x = 466.47

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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.