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Finding the Fourth Proportional to 1,942.94, 2,914.89 and 556.31

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Solution

The fourth proportional to 1,942.94, 2,914.89 and 556.31 is: 834.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.94 : 2,914.89 = 556.31 : x
  2. Step 2: Convert to fraction form
    1,942.94/2,914.89 = 556.31/x
  3. Step 3: Cross multiply
    1,942.94x = 2,914.89 × 556.31
  4. Step 4: Simplify right side
    1,942.94x = 1,621,567.88
  5. Step 5: Solve for x
    x = 1,621,567.88/1,942.94
  6. Step 6: Final answer
    x = 834.60

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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.