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Finding the Fourth Proportional to 2,206.08, 3,310.08 and 907.84

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Solution

The fourth proportional to 2,206.08, 3,310.08 and 907.84 is: 1,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.08 : 3,310.08 = 907.84 : x
  2. Step 2: Convert to fraction form
    2,206.08/3,310.08 = 907.84/x
  3. Step 3: Cross multiply
    2,206.08x = 3,310.08 × 907.84
  4. Step 4: Simplify right side
    2,206.08x = 3,005,023.03
  5. Step 5: Solve for x
    x = 3,005,023.03/2,206.08
  6. Step 6: Final answer
    x = 1,362.16

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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.