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Finding the Fourth Proportional to 367.55, 507.21 and 201.75

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Solution

The fourth proportional to 367.55, 507.21 and 201.75 is: 278.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.55 : 507.21 = 201.75 : x
  2. Step 2: Convert to fraction form
    367.55/507.21 = 201.75/x
  3. Step 3: Cross multiply
    367.55x = 507.21 × 201.75
  4. Step 4: Simplify right side
    367.55x = 102,329.62
  5. Step 5: Solve for x
    x = 102,329.62/367.55
  6. Step 6: Final answer
    x = 278.41

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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.