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Finding the Fourth Proportional to 548.26, 822.32 and 259.62

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Solution

The fourth proportional to 548.26, 822.32 and 259.62 is: 389.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.26 : 822.32 = 259.62 : x
  2. Step 2: Convert to fraction form
    548.26/822.32 = 259.62/x
  3. Step 3: Cross multiply
    548.26x = 822.32 × 259.62
  4. Step 4: Simplify right side
    548.26x = 213,490.72
  5. Step 5: Solve for x
    x = 213,490.72/548.26
  6. Step 6: Final answer
    x = 389.40

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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.