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Finding the Fourth Proportional to 548.08, 822.53 and 259.72

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Solution

The fourth proportional to 548.08, 822.53 and 259.72 is: 389.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.08 : 822.53 = 259.72 : x
  2. Step 2: Convert to fraction form
    548.08/822.53 = 259.72/x
  3. Step 3: Cross multiply
    548.08x = 822.53 × 259.72
  4. Step 4: Simplify right side
    548.08x = 213,626.08
  5. Step 5: Solve for x
    x = 213,626.08/548.08
  6. Step 6: Final answer
    x = 389.77

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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.