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Finding the Fourth Proportional to 446.69, 618.93 and 436.61

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Solution

The fourth proportional to 446.69, 618.93 and 436.61 is: 604.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.69 : 618.93 = 436.61 : x
  2. Step 2: Convert to fraction form
    446.69/618.93 = 436.61/x
  3. Step 3: Cross multiply
    446.69x = 618.93 × 436.61
  4. Step 4: Simplify right side
    446.69x = 270,228.84
  5. Step 5: Solve for x
    x = 270,228.84/446.69
  6. Step 6: Final answer
    x = 604.96

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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.