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Finding the Fourth Proportional to 367.89, 507.60 and 220.56

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Solution

The fourth proportional to 367.89, 507.60 and 220.56 is: 304.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.89 : 507.60 = 220.56 : x
  2. Step 2: Convert to fraction form
    367.89/507.60 = 220.56/x
  3. Step 3: Cross multiply
    367.89x = 507.60 × 220.56
  4. Step 4: Simplify right side
    367.89x = 111,956.26
  5. Step 5: Solve for x
    x = 111,956.26/367.89
  6. Step 6: Final answer
    x = 304.32

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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.