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Finding the Fourth Proportional to 367.79, 507.38 and 220.17

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Solution

The fourth proportional to 367.79, 507.38 and 220.17 is: 303.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.79 : 507.38 = 220.17 : x
  2. Step 2: Convert to fraction form
    367.79/507.38 = 220.17/x
  3. Step 3: Cross multiply
    367.79x = 507.38 × 220.17
  4. Step 4: Simplify right side
    367.79x = 111,709.04
  5. Step 5: Solve for x
    x = 111,709.04/367.79
  6. Step 6: Final answer
    x = 303.73

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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.