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Finding the Fourth Proportional to 446.94, 669.24 and 378.32

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Solution

The fourth proportional to 446.94, 669.24 and 378.32 is: 566.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.94 : 669.24 = 378.32 : x
  2. Step 2: Convert to fraction form
    446.94/669.24 = 378.32/x
  3. Step 3: Cross multiply
    446.94x = 669.24 × 378.32
  4. Step 4: Simplify right side
    446.94x = 253,183.53
  5. Step 5: Solve for x
    x = 253,183.53/446.94
  6. Step 6: Final answer
    x = 566.48

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Double scale
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1.5x scale

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.