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Finding the Fourth Proportional to 1,616.63, 2,423.79 and 738.69

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Solution

The fourth proportional to 1,616.63, 2,423.79 and 738.69 is: 1,107.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,616.63 : 2,423.79 = 738.69 : x
  2. Step 2: Convert to fraction form
    1,616.63/2,423.79 = 738.69/x
  3. Step 3: Cross multiply
    1,616.63x = 2,423.79 × 738.69
  4. Step 4: Simplify right side
    1,616.63x = 1,790,429.44
  5. Step 5: Solve for x
    x = 1,790,429.44/1,616.63
  6. Step 6: Final answer
    x = 1,107.51

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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.