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Finding the Fourth Proportional to 523.12, 721.86 and 336.56

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Solution

The fourth proportional to 523.12, 721.86 and 336.56 is: 464.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.12 : 721.86 = 336.56 : x
  2. Step 2: Convert to fraction form
    523.12/721.86 = 336.56/x
  3. Step 3: Cross multiply
    523.12x = 721.86 × 336.56
  4. Step 4: Simplify right side
    523.12x = 242,949.20
  5. Step 5: Solve for x
    x = 242,949.20/523.12
  6. Step 6: Final answer
    x = 464.42

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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.