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Finding the Fourth Proportional to 1,974.05, 2,961.02 and 493.26

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Solution

The fourth proportional to 1,974.05, 2,961.02 and 493.26 is: 739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.05 : 2,961.02 = 493.26 : x
  2. Step 2: Convert to fraction form
    1,974.05/2,961.02 = 493.26/x
  3. Step 3: Cross multiply
    1,974.05x = 2,961.02 × 493.26
  4. Step 4: Simplify right side
    1,974.05x = 1,460,550.26
  5. Step 5: Solve for x
    x = 1,460,550.26/1,974.05
  6. Step 6: Final answer
    x = 739.88

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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.