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Finding the Fourth Proportional to 264.89, 397.10 and 127.86

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Solution

The fourth proportional to 264.89, 397.10 and 127.86 is: 191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.89 : 397.10 = 127.86 : x
  2. Step 2: Convert to fraction form
    264.89/397.10 = 127.86/x
  3. Step 3: Cross multiply
    264.89x = 397.10 × 127.86
  4. Step 4: Simplify right side
    264.89x = 50,772.62
  5. Step 5: Solve for x
    x = 50,772.62/264.89
  6. Step 6: Final answer
    x = 191.68

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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.