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Finding the Fourth Proportional to 398.07, 550.26 and 336.24

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Solution

The fourth proportional to 398.07, 550.26 and 336.24 is: 464.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.07 : 550.26 = 336.24 : x
  2. Step 2: Convert to fraction form
    398.07/550.26 = 336.24/x
  3. Step 3: Cross multiply
    398.07x = 550.26 × 336.24
  4. Step 4: Simplify right side
    398.07x = 185,019.42
  5. Step 5: Solve for x
    x = 185,019.42/398.07
  6. Step 6: Final answer
    x = 464.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.