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Finding the Fourth Proportional to 446.46, 667.50 and 378.74

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Solution

The fourth proportional to 446.46, 667.50 and 378.74 is: 566.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.46 : 667.50 = 378.74 : x
  2. Step 2: Convert to fraction form
    446.46/667.50 = 378.74/x
  3. Step 3: Cross multiply
    446.46x = 667.50 × 378.74
  4. Step 4: Simplify right side
    446.46x = 252,808.95
  5. Step 5: Solve for x
    x = 252,808.95/446.46
  6. Step 6: Final answer
    x = 566.25

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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.