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Finding the Fourth Proportional to 2,226.81, 3,336.55 and 765.16

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Solution

The fourth proportional to 2,226.81, 3,336.55 and 765.16 is: 1,146.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,226.81 : 3,336.55 = 765.16 : x
  2. Step 2: Convert to fraction form
    2,226.81/3,336.55 = 765.16/x
  3. Step 3: Cross multiply
    2,226.81x = 3,336.55 × 765.16
  4. Step 4: Simplify right side
    2,226.81x = 2,552,994.60
  5. Step 5: Solve for x
    x = 2,552,994.60/2,226.81
  6. Step 6: Final answer
    x = 1,146.48

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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.