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Finding the Fourth Proportional to 446.15, 669.15 and 121.52

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Solution

The fourth proportional to 446.15, 669.15 and 121.52 is: 182.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.15 : 669.15 = 121.52 : x
  2. Step 2: Convert to fraction form
    446.15/669.15 = 121.52/x
  3. Step 3: Cross multiply
    446.15x = 669.15 × 121.52
  4. Step 4: Simplify right side
    446.15x = 81,311.76
  5. Step 5: Solve for x
    x = 81,311.76/446.15
  6. Step 6: Final answer
    x = 182.25

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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.