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Finding the Fourth Proportional to 441.63, 662.14 and 210.55

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Solution

The fourth proportional to 441.63, 662.14 and 210.55 is: 315.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.63 : 662.14 = 210.55 : x
  2. Step 2: Convert to fraction form
    441.63/662.14 = 210.55/x
  3. Step 3: Cross multiply
    441.63x = 662.14 × 210.55
  4. Step 4: Simplify right side
    441.63x = 139,413.58
  5. Step 5: Solve for x
    x = 139,413.58/441.63
  6. Step 6: Final answer
    x = 315.68

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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.