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Finding the Fourth Proportional to 517.33, 772.16 and 481.21

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Solution

The fourth proportional to 517.33, 772.16 and 481.21 is: 718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    517.33 : 772.16 = 481.21 : x
  2. Step 2: Convert to fraction form
    517.33/772.16 = 481.21/x
  3. Step 3: Cross multiply
    517.33x = 772.16 × 481.21
  4. Step 4: Simplify right side
    517.33x = 371,571.11
  5. Step 5: Solve for x
    x = 371,571.11/517.33
  6. Step 6: Final answer
    x = 718.25

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.