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Finding the Fourth Proportional to 446.55, 669.86 and 121.94

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Solution

The fourth proportional to 446.55, 669.86 and 121.94 is: 182.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.55 : 669.86 = 121.94 : x
  2. Step 2: Convert to fraction form
    446.55/669.86 = 121.94/x
  3. Step 3: Cross multiply
    446.55x = 669.86 × 121.94
  4. Step 4: Simplify right side
    446.55x = 81,682.73
  5. Step 5: Solve for x
    x = 81,682.73/446.55
  6. Step 6: Final answer
    x = 182.92

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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.