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Finding the Fourth Proportional to 446.20, 670.10 and 324.60

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Solution

The fourth proportional to 446.20, 670.10 and 324.60 is: 487.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.20 : 670.10 = 324.60 : x
  2. Step 2: Convert to fraction form
    446.20/670.10 = 324.60/x
  3. Step 3: Cross multiply
    446.20x = 670.10 × 324.60
  4. Step 4: Simplify right side
    446.20x = 217,514.46
  5. Step 5: Solve for x
    x = 217,514.46/446.20
  6. Step 6: Final answer
    x = 487.48

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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.