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Finding the Fourth Proportional to 338.77, 505.41 and 336.34

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Solution

The fourth proportional to 338.77, 505.41 and 336.34 is: 501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.77 : 505.41 = 336.34 : x
  2. Step 2: Convert to fraction form
    338.77/505.41 = 336.34/x
  3. Step 3: Cross multiply
    338.77x = 505.41 × 336.34
  4. Step 4: Simplify right side
    338.77x = 169,989.60
  5. Step 5: Solve for x
    x = 169,989.60/338.77
  6. Step 6: Final answer
    x = 501.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.