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Finding the Fourth Proportional to 1,867.13, 2,798.94 and 633.68

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Solution

The fourth proportional to 1,867.13, 2,798.94 and 633.68 is: 949.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867.13 : 2,798.94 = 633.68 : x
  2. Step 2: Convert to fraction form
    1,867.13/2,798.94 = 633.68/x
  3. Step 3: Cross multiply
    1,867.13x = 2,798.94 × 633.68
  4. Step 4: Simplify right side
    1,867.13x = 1,773,618.30
  5. Step 5: Solve for x
    x = 1,773,618.30/1,867.13
  6. Step 6: Final answer
    x = 949.92

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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.