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Finding the Fourth Proportional to 460.44, 689.31 and 433.80

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Solution

The fourth proportional to 460.44, 689.31 and 433.80 is: 649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.44 : 689.31 = 433.80 : x
  2. Step 2: Convert to fraction form
    460.44/689.31 = 433.80/x
  3. Step 3: Cross multiply
    460.44x = 689.31 × 433.80
  4. Step 4: Simplify right side
    460.44x = 299,022.68
  5. Step 5: Solve for x
    x = 299,022.68/460.44
  6. Step 6: Final answer
    x = 649.43

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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.