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Finding the Fourth Proportional to 339.09, 508.45 and 156.37

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Solution

The fourth proportional to 339.09, 508.45 and 156.37 is: 234.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.09 : 508.45 = 156.37 : x
  2. Step 2: Convert to fraction form
    339.09/508.45 = 156.37/x
  3. Step 3: Cross multiply
    339.09x = 508.45 × 156.37
  4. Step 4: Simplify right side
    339.09x = 79,506.33
  5. Step 5: Solve for x
    x = 79,506.33/339.09
  6. Step 6: Final answer
    x = 234.47

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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.