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Finding the Fourth Proportional to 1,992.14, 2,987.13 and 605.06

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Solution

The fourth proportional to 1,992.14, 2,987.13 and 605.06 is: 907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992.14 : 2,987.13 = 605.06 : x
  2. Step 2: Convert to fraction form
    1,992.14/2,987.13 = 605.06/x
  3. Step 3: Cross multiply
    1,992.14x = 2,987.13 × 605.06
  4. Step 4: Simplify right side
    1,992.14x = 1,807,392.88
  5. Step 5: Solve for x
    x = 1,807,392.88/1,992.14
  6. Step 6: Final answer
    x = 907.26

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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.