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Finding the Fourth Proportional to 367.67, 507.40 and 220.32

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Solution

The fourth proportional to 367.67, 507.40 and 220.32 is: 304.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.67 : 507.40 = 220.32 : x
  2. Step 2: Convert to fraction form
    367.67/507.40 = 220.32/x
  3. Step 3: Cross multiply
    367.67x = 507.40 × 220.32
  4. Step 4: Simplify right side
    367.67x = 111,789.82
  5. Step 5: Solve for x
    x = 111,789.82/367.67
  6. Step 6: Final answer
    x = 304.05

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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.