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Finding the Fourth Proportional to 1,995.65, 2,992.56 and 608.66

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Solution

The fourth proportional to 1,995.65, 2,992.56 and 608.66 is: 912.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,995.65 : 2,992.56 = 608.66 : x
  2. Step 2: Convert to fraction form
    1,995.65/2,992.56 = 608.66/x
  3. Step 3: Cross multiply
    1,995.65x = 2,992.56 × 608.66
  4. Step 4: Simplify right side
    1,995.65x = 1,821,436.61
  5. Step 5: Solve for x
    x = 1,821,436.61/1,995.65
  6. Step 6: Final answer
    x = 912.71

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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.