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Finding the Fourth Proportional to 1,863.28, 2,794.92 and 630.69

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Solution

The fourth proportional to 1,863.28, 2,794.92 and 630.69 is: 946.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,863.28 : 2,794.92 = 630.69 : x
  2. Step 2: Convert to fraction form
    1,863.28/2,794.92 = 630.69/x
  3. Step 3: Cross multiply
    1,863.28x = 2,794.92 × 630.69
  4. Step 4: Simplify right side
    1,863.28x = 1,762,728.09
  5. Step 5: Solve for x
    x = 1,762,728.09/1,863.28
  6. Step 6: Final answer
    x = 946.04

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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.