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Finding the Fourth Proportional to 367.28, 549.90 and 286.28

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Solution

The fourth proportional to 367.28, 549.90 and 286.28 is: 428.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    367.28 : 549.90 = 286.28 : x
  2. Step 2: Convert to fraction form
    367.28/549.90 = 286.28/x
  3. Step 3: Cross multiply
    367.28x = 549.90 × 286.28
  4. Step 4: Simplify right side
    367.28x = 157,422.62
  5. Step 5: Solve for x
    x = 157,422.62/367.28
  6. Step 6: Final answer
    x = 428.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.