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Finding the Fourth Proportional to 1,183.93, 1,776.30 and 453.72

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Solution

The fourth proportional to 1,183.93, 1,776.30 and 453.72 is: 680.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,183.93 : 1,776.30 = 453.72 : x
  2. Step 2: Convert to fraction form
    1,183.93/1,776.30 = 453.72/x
  3. Step 3: Cross multiply
    1,183.93x = 1,776.30 × 453.72
  4. Step 4: Simplify right side
    1,183.93x = 805,942.84
  5. Step 5: Solve for x
    x = 805,942.84/1,183.93
  6. Step 6: Final answer
    x = 680.74

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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.