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Finding the Fourth Proportional to 495.98, 743.78 and 171.26

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Solution

The fourth proportional to 495.98, 743.78 and 171.26 is: 256.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.98 : 743.78 = 171.26 : x
  2. Step 2: Convert to fraction form
    495.98/743.78 = 171.26/x
  3. Step 3: Cross multiply
    495.98x = 743.78 × 171.26
  4. Step 4: Simplify right side
    495.98x = 127,379.76
  5. Step 5: Solve for x
    x = 127,379.76/495.98
  6. Step 6: Final answer
    x = 256.82

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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.