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Finding the Fourth Proportional to 1,194.82, 1,790.61 and 618.10

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Solution

The fourth proportional to 1,194.82, 1,790.61 and 618.10 is: 926.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.82 : 1,790.61 = 618.10 : x
  2. Step 2: Convert to fraction form
    1,194.82/1,790.61 = 618.10/x
  3. Step 3: Cross multiply
    1,194.82x = 1,790.61 × 618.10
  4. Step 4: Simplify right side
    1,194.82x = 1,106,776.04
  5. Step 5: Solve for x
    x = 1,106,776.04/1,194.82
  6. Step 6: Final answer
    x = 926.31

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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.