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Finding the Fourth Proportional to 2,225.08, 3,336.69 and 764.35

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Solution

The fourth proportional to 2,225.08, 3,336.69 and 764.35 is: 1,146.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.08 : 3,336.69 = 764.35 : x
  2. Step 2: Convert to fraction form
    2,225.08/3,336.69 = 764.35/x
  3. Step 3: Cross multiply
    2,225.08x = 3,336.69 × 764.35
  4. Step 4: Simplify right side
    2,225.08x = 2,550,399.00
  5. Step 5: Solve for x
    x = 2,550,399.00/2,225.08
  6. Step 6: Final answer
    x = 1,146.21

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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.