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Finding the Fourth Proportional to 553.73, 830.24 and 219.77

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Solution

The fourth proportional to 553.73, 830.24 and 219.77 is: 329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.73 : 830.24 = 219.77 : x
  2. Step 2: Convert to fraction form
    553.73/830.24 = 219.77/x
  3. Step 3: Cross multiply
    553.73x = 830.24 × 219.77
  4. Step 4: Simplify right side
    553.73x = 182,456.59
  5. Step 5: Solve for x
    x = 182,456.59/553.73
  6. Step 6: Final answer
    x = 329.51

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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.