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Finding the Fourth Proportional to 1,474.71, 2,212.02 and 743.76

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Solution

The fourth proportional to 1,474.71, 2,212.02 and 743.76 is: 1,115.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.71 : 2,212.02 = 743.76 : x
  2. Step 2: Convert to fraction form
    1,474.71/2,212.02 = 743.76/x
  3. Step 3: Cross multiply
    1,474.71x = 2,212.02 × 743.76
  4. Step 4: Simplify right side
    1,474.71x = 1,645,212.00
  5. Step 5: Solve for x
    x = 1,645,212.00/1,474.71
  6. Step 6: Final answer
    x = 1,115.62

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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.