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Finding the Fourth Proportional to 446.08, 664.64 and 423.04

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Solution

The fourth proportional to 446.08, 664.64 and 423.04 is: 630.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.08 : 664.64 = 423.04 : x
  2. Step 2: Convert to fraction form
    446.08/664.64 = 423.04/x
  3. Step 3: Cross multiply
    446.08x = 664.64 × 423.04
  4. Step 4: Simplify right side
    446.08x = 281,169.31
  5. Step 5: Solve for x
    x = 281,169.31/446.08
  6. Step 6: Final answer
    x = 630.31

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.