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Finding the Fourth Proportional to 1,462, 2,017.25 and 989.97

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Solution

The fourth proportional to 1,462, 2,017.25 and 989.97 is: 1,365.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,462 : 2,017.25 = 989.97 : x
  2. Step 2: Convert to fraction form
    1,462/2,017.25 = 989.97/x
  3. Step 3: Cross multiply
    1,462x = 2,017.25 × 989.97
  4. Step 4: Simplify right side
    1,462x = 1,997,016.98
  5. Step 5: Solve for x
    x = 1,997,016.98/1,462
  6. Step 6: Final answer
    x = 1,365.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.