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Finding the Fourth Proportional to 517.09, 775.43 and 170.41

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Solution

The fourth proportional to 517.09, 775.43 and 170.41 is: 255.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.09 : 775.43 = 170.41 : x
  2. Step 2: Convert to fraction form
    517.09/775.43 = 170.41/x
  3. Step 3: Cross multiply
    517.09x = 775.43 × 170.41
  4. Step 4: Simplify right side
    517.09x = 132,141.03
  5. Step 5: Solve for x
    x = 132,141.03/517.09
  6. Step 6: Final answer
    x = 255.55

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Double scale
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Similar ratio
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1.5x scale

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.