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Finding the Fourth Proportional to 2,066.65, 3,099.87 and 605.75

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Solution

The fourth proportional to 2,066.65, 3,099.87 and 605.75 is: 908.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,066.65 : 3,099.87 = 605.75 : x
  2. Step 2: Convert to fraction form
    2,066.65/3,099.87 = 605.75/x
  3. Step 3: Cross multiply
    2,066.65x = 3,099.87 × 605.75
  4. Step 4: Simplify right side
    2,066.65x = 1,877,730.75
  5. Step 5: Solve for x
    x = 1,877,730.75/2,066.65
  6. Step 6: Final answer
    x = 908.59

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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.