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Finding the Fourth Proportional to 1,942.94, 2,914.98 and 626.67

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Solution

The fourth proportional to 1,942.94, 2,914.98 and 626.67 is: 940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.94 : 2,914.98 = 626.67 : x
  2. Step 2: Convert to fraction form
    1,942.94/2,914.98 = 626.67/x
  3. Step 3: Cross multiply
    1,942.94x = 2,914.98 × 626.67
  4. Step 4: Simplify right side
    1,942.94x = 1,826,716.46
  5. Step 5: Solve for x
    x = 1,826,716.46/1,942.94
  6. Step 6: Final answer
    x = 940.18

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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.