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Finding the Fourth Proportional to 433.50, 649.68 and 225.36

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Solution

The fourth proportional to 433.50, 649.68 and 225.36 is: 337.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.50 : 649.68 = 225.36 : x
  2. Step 2: Convert to fraction form
    433.50/649.68 = 225.36/x
  3. Step 3: Cross multiply
    433.50x = 649.68 × 225.36
  4. Step 4: Simplify right side
    433.50x = 146,411.88
  5. Step 5: Solve for x
    x = 146,411.88/433.50
  6. Step 6: Final answer
    x = 337.74

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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.