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Finding the Fourth Proportional to 2,940.30, 4,410.47 and 749.03

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Solution

The fourth proportional to 2,940.30, 4,410.47 and 749.03 is: 1,123.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.30 : 4,410.47 = 749.03 : x
  2. Step 2: Convert to fraction form
    2,940.30/4,410.47 = 749.03/x
  3. Step 3: Cross multiply
    2,940.30x = 4,410.47 × 749.03
  4. Step 4: Simplify right side
    2,940.30x = 3,303,548.55
  5. Step 5: Solve for x
    x = 3,303,548.55/2,940.30
  6. Step 6: Final answer
    x = 1,123.54

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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.