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Finding the Fourth Proportional to 2,224.60, 3,337.43 and 763.75

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Solution

The fourth proportional to 2,224.60, 3,337.43 and 763.75 is: 1,145.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,224.60 : 3,337.43 = 763.75 : x
  2. Step 2: Convert to fraction form
    2,224.60/3,337.43 = 763.75/x
  3. Step 3: Cross multiply
    2,224.60x = 3,337.43 × 763.75
  4. Step 4: Simplify right side
    2,224.60x = 2,548,962.16
  5. Step 5: Solve for x
    x = 2,548,962.16/2,224.60
  6. Step 6: Final answer
    x = 1,145.81

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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.