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Finding the Fourth Proportional to 548.77, 823.17 and 202.21

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Solution

The fourth proportional to 548.77, 823.17 and 202.21 is: 303.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.77 : 823.17 = 202.21 : x
  2. Step 2: Convert to fraction form
    548.77/823.17 = 202.21/x
  3. Step 3: Cross multiply
    548.77x = 823.17 × 202.21
  4. Step 4: Simplify right side
    548.77x = 166,453.21
  5. Step 5: Solve for x
    x = 166,453.21/548.77
  6. Step 6: Final answer
    x = 303.32

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Double scale
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Similar ratio
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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.