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Finding the Fourth Proportional to 2,268.81, 3,402.90 and 807.75

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Solution

The fourth proportional to 2,268.81, 3,402.90 and 807.75 is: 1,211.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,268.81 : 3,402.90 = 807.75 : x
  2. Step 2: Convert to fraction form
    2,268.81/3,402.90 = 807.75/x
  3. Step 3: Cross multiply
    2,268.81x = 3,402.90 × 807.75
  4. Step 4: Simplify right side
    2,268.81x = 2,748,692.48
  5. Step 5: Solve for x
    x = 2,748,692.48/2,268.81
  6. Step 6: Final answer
    x = 1,211.51

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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.