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Finding the Fourth Proportional to 1,866.83, 2,800.49 and 633.91

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Solution

The fourth proportional to 1,866.83, 2,800.49 and 633.91 is: 950.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,866.83 : 2,800.49 = 633.91 : x
  2. Step 2: Convert to fraction form
    1,866.83/2,800.49 = 633.91/x
  3. Step 3: Cross multiply
    1,866.83x = 2,800.49 × 633.91
  4. Step 4: Simplify right side
    1,866.83x = 1,775,257.26
  5. Step 5: Solve for x
    x = 1,775,257.26/1,866.83
  6. Step 6: Final answer
    x = 950.95

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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.