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Finding the Fourth Proportional to 339.31, 508.89 and 95.86

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Solution

The fourth proportional to 339.31, 508.89 and 95.86 is: 143.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.31 : 508.89 = 95.86 : x
  2. Step 2: Convert to fraction form
    339.31/508.89 = 95.86/x
  3. Step 3: Cross multiply
    339.31x = 508.89 × 95.86
  4. Step 4: Simplify right side
    339.31x = 48,782.20
  5. Step 5: Solve for x
    x = 48,782.20/339.31
  6. Step 6: Final answer
    x = 143.77

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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.