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Finding the Fourth Proportional to 446.62, 669.36 and 215.56

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Solution

The fourth proportional to 446.62, 669.36 and 215.56 is: 323.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.62 : 669.36 = 215.56 : x
  2. Step 2: Convert to fraction form
    446.62/669.36 = 215.56/x
  3. Step 3: Cross multiply
    446.62x = 669.36 × 215.56
  4. Step 4: Simplify right side
    446.62x = 144,287.24
  5. Step 5: Solve for x
    x = 144,287.24/446.62
  6. Step 6: Final answer
    x = 323.06

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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.