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Finding the Fourth Proportional to 663.05, 992.73 and 336.81

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Solution

The fourth proportional to 663.05, 992.73 and 336.81 is: 504.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    663.05 : 992.73 = 336.81 : x
  2. Step 2: Convert to fraction form
    663.05/992.73 = 336.81/x
  3. Step 3: Cross multiply
    663.05x = 992.73 × 336.81
  4. Step 4: Simplify right side
    663.05x = 334,361.39
  5. Step 5: Solve for x
    x = 334,361.39/663.05
  6. Step 6: Final answer
    x = 504.28

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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.