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Finding the Fourth Proportional to 367.70, 507.09 and 251.30

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Solution

The fourth proportional to 367.70, 507.09 and 251.30 is: 346.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.70 : 507.09 = 251.30 : x
  2. Step 2: Convert to fraction form
    367.70/507.09 = 251.30/x
  3. Step 3: Cross multiply
    367.70x = 507.09 × 251.30
  4. Step 4: Simplify right side
    367.70x = 127,431.72
  5. Step 5: Solve for x
    x = 127,431.72/367.70
  6. Step 6: Final answer
    x = 346.56

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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.