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Finding the Fourth Proportional to 495.45, 742.70 and 170.73

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Solution

The fourth proportional to 495.45, 742.70 and 170.73 is: 255.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.45 : 742.70 = 170.73 : x
  2. Step 2: Convert to fraction form
    495.45/742.70 = 170.73/x
  3. Step 3: Cross multiply
    495.45x = 742.70 × 170.73
  4. Step 4: Simplify right side
    495.45x = 126,801.60
  5. Step 5: Solve for x
    x = 126,801.60/495.45
  6. Step 6: Final answer
    x = 255.93

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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.