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Finding the Fourth Proportional to 433.28, 649.28 and 337.28

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Solution

The fourth proportional to 433.28, 649.28 and 337.28 is: 505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.28 : 649.28 = 337.28 : x
  2. Step 2: Convert to fraction form
    433.28/649.28 = 337.28/x
  3. Step 3: Cross multiply
    433.28x = 649.28 × 337.28
  4. Step 4: Simplify right side
    433.28x = 218,989.16
  5. Step 5: Solve for x
    x = 218,989.16/433.28
  6. Step 6: Final answer
    x = 505.42

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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.