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Finding the Fourth Proportional to 548.44, 817.82 and 543.56

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Solution

The fourth proportional to 548.44, 817.82 and 543.56 is: 810.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.44 : 817.82 = 543.56 : x
  2. Step 2: Convert to fraction form
    548.44/817.82 = 543.56/x
  3. Step 3: Cross multiply
    548.44x = 817.82 × 543.56
  4. Step 4: Simplify right side
    548.44x = 444,534.24
  5. Step 5: Solve for x
    x = 444,534.24/548.44
  6. Step 6: Final answer
    x = 810.54

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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.