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Finding the Fourth Proportional to 548.90, 822.78 and 353.82

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Solution

The fourth proportional to 548.90, 822.78 and 353.82 is: 530.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.90 : 822.78 = 353.82 : x
  2. Step 2: Convert to fraction form
    548.90/822.78 = 353.82/x
  3. Step 3: Cross multiply
    548.90x = 822.78 × 353.82
  4. Step 4: Simplify right side
    548.90x = 291,116.02
  5. Step 5: Solve for x
    x = 291,116.02/548.90
  6. Step 6: Final answer
    x = 530.37

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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.