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Finding the Fourth Proportional to 482.45, 723.67 and 338.81

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Solution

The fourth proportional to 482.45, 723.67 and 338.81 is: 508.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.45 : 723.67 = 338.81 : x
  2. Step 2: Convert to fraction form
    482.45/723.67 = 338.81/x
  3. Step 3: Cross multiply
    482.45x = 723.67 × 338.81
  4. Step 4: Simplify right side
    482.45x = 245,183.92
  5. Step 5: Solve for x
    x = 245,183.92/482.45
  6. Step 6: Final answer
    x = 508.21

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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.