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Finding the Fourth Proportional to 446.64, 618.84 and 436.92

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Solution

The fourth proportional to 446.64, 618.84 and 436.92 is: 605.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.64 : 618.84 = 436.92 : x
  2. Step 2: Convert to fraction form
    446.64/618.84 = 436.92/x
  3. Step 3: Cross multiply
    446.64x = 618.84 × 436.92
  4. Step 4: Simplify right side
    446.64x = 270,383.57
  5. Step 5: Solve for x
    x = 270,383.57/446.64
  6. Step 6: Final answer
    x = 605.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.