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Finding the Fourth Proportional to 548.55, 822.42 and 400.32

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Solution

The fourth proportional to 548.55, 822.42 and 400.32 is: 600.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.55 : 822.42 = 400.32 : x
  2. Step 2: Convert to fraction form
    548.55/822.42 = 400.32/x
  3. Step 3: Cross multiply
    548.55x = 822.42 × 400.32
  4. Step 4: Simplify right side
    548.55x = 329,231.17
  5. Step 5: Solve for x
    x = 329,231.17/548.55
  6. Step 6: Final answer
    x = 600.18

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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.