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Finding the Fourth Proportional to 481.11, 716.70 and 451.23

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Solution

The fourth proportional to 481.11, 716.70 and 451.23 is: 672.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    481.11 : 716.70 = 451.23 : x
  2. Step 2: Convert to fraction form
    481.11/716.70 = 451.23/x
  3. Step 3: Cross multiply
    481.11x = 716.70 × 451.23
  4. Step 4: Simplify right side
    481.11x = 323,396.54
  5. Step 5: Solve for x
    x = 323,396.54/481.11
  6. Step 6: Final answer
    x = 672.19

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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.