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Finding the Fourth Proportional to 470.80, 649.44 and 323.26

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Solution

The fourth proportional to 470.80, 649.44 and 323.26 is: 445.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.80 : 649.44 = 323.26 : x
  2. Step 2: Convert to fraction form
    470.80/649.44 = 323.26/x
  3. Step 3: Cross multiply
    470.80x = 649.44 × 323.26
  4. Step 4: Simplify right side
    470.80x = 209,937.97
  5. Step 5: Solve for x
    x = 209,937.97/470.80
  6. Step 6: Final answer
    x = 445.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.