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Finding the Fourth Proportional to 2,205.95, 3,308.93 and 666.95

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Solution

The fourth proportional to 2,205.95, 3,308.93 and 666.95 is: 1,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,205.95 : 3,308.93 = 666.95 : x
  2. Step 2: Convert to fraction form
    2,205.95/3,308.93 = 666.95/x
  3. Step 3: Cross multiply
    2,205.95x = 3,308.93 × 666.95
  4. Step 4: Simplify right side
    2,205.95x = 2,206,870.98
  5. Step 5: Solve for x
    x = 2,206,870.98/2,205.95
  6. Step 6: Final answer
    x = 1,000.42

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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.