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Finding the Fourth Proportional to 367.05, 505.61 and 330.15

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Solution

The fourth proportional to 367.05, 505.61 and 330.15 is: 454.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.05 : 505.61 = 330.15 : x
  2. Step 2: Convert to fraction form
    367.05/505.61 = 330.15/x
  3. Step 3: Cross multiply
    367.05x = 505.61 × 330.15
  4. Step 4: Simplify right side
    367.05x = 166,927.14
  5. Step 5: Solve for x
    x = 166,927.14/367.05
  6. Step 6: Final answer
    x = 454.78

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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.