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Finding the Fourth Proportional to 433.60, 649.89 and 202.28

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Solution

The fourth proportional to 433.60, 649.89 and 202.28 is: 303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.60 : 649.89 = 202.28 : x
  2. Step 2: Convert to fraction form
    433.60/649.89 = 202.28/x
  3. Step 3: Cross multiply
    433.60x = 649.89 × 202.28
  4. Step 4: Simplify right side
    433.60x = 131,456.50
  5. Step 5: Solve for x
    x = 131,456.50/433.60
  6. Step 6: Final answer
    x = 303.18

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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.