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Finding the Fourth Proportional to 548.54, 822.60 and 514.12

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Solution

The fourth proportional to 548.54, 822.60 and 514.12 is: 770.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.54 : 822.60 = 514.12 : x
  2. Step 2: Convert to fraction form
    548.54/822.60 = 514.12/x
  3. Step 3: Cross multiply
    548.54x = 822.60 × 514.12
  4. Step 4: Simplify right side
    548.54x = 422,915.11
  5. Step 5: Solve for x
    x = 422,915.11/548.54
  6. Step 6: Final answer
    x = 770.98

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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.