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Finding the Fourth Proportional to 470.99, 649.32 and 323.97

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Solution

The fourth proportional to 470.99, 649.32 and 323.97 is: 446.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.99 : 649.32 = 323.97 : x
  2. Step 2: Convert to fraction form
    470.99/649.32 = 323.97/x
  3. Step 3: Cross multiply
    470.99x = 649.32 × 323.97
  4. Step 4: Simplify right side
    470.99x = 210,360.20
  5. Step 5: Solve for x
    x = 210,360.20/470.99
  6. Step 6: Final answer
    x = 446.64

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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.