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Finding the Fourth Proportional to 1,450.46, 2,178.36 and 757.61

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Solution

The fourth proportional to 1,450.46, 2,178.36 and 757.61 is: 1,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,450.46 : 2,178.36 = 757.61 : x
  2. Step 2: Convert to fraction form
    1,450.46/2,178.36 = 757.61/x
  3. Step 3: Cross multiply
    1,450.46x = 2,178.36 × 757.61
  4. Step 4: Simplify right side
    1,450.46x = 1,650,336.43
  5. Step 5: Solve for x
    x = 1,650,336.43/1,450.46
  6. Step 6: Final answer
    x = 1,137.81

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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.