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Finding the Fourth Proportional to 365.56, 550.48 and 263.55

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Solution

The fourth proportional to 365.56, 550.48 and 263.55 is: 396.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.56 : 550.48 = 263.55 : x
  2. Step 2: Convert to fraction form
    365.56/550.48 = 263.55/x
  3. Step 3: Cross multiply
    365.56x = 550.48 × 263.55
  4. Step 4: Simplify right side
    365.56x = 145,080.90
  5. Step 5: Solve for x
    x = 145,080.90/365.56
  6. Step 6: Final answer
    x = 396.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.