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Finding the Fourth Proportional to 433.58, 649.34 and 238.29

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Solution

The fourth proportional to 433.58, 649.34 and 238.29 is: 356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.58 : 649.34 = 238.29 : x
  2. Step 2: Convert to fraction form
    433.58/649.34 = 238.29/x
  3. Step 3: Cross multiply
    433.58x = 649.34 × 238.29
  4. Step 4: Simplify right side
    433.58x = 154,730.04
  5. Step 5: Solve for x
    x = 154,730.04/433.58
  6. Step 6: Final answer
    x = 356.87

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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.