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Finding the Fourth Proportional to 548.34, 822.60 and 411.24

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Solution

The fourth proportional to 548.34, 822.60 and 411.24 is: 616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.34 : 822.60 = 411.24 : x
  2. Step 2: Convert to fraction form
    548.34/822.60 = 411.24/x
  3. Step 3: Cross multiply
    548.34x = 822.60 × 411.24
  4. Step 4: Simplify right side
    548.34x = 338,286.02
  5. Step 5: Solve for x
    x = 338,286.02/548.34
  6. Step 6: Final answer
    x = 616.93

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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.