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Finding the Fourth Proportional to 1,464.95, 2,194.36 and 685.62

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Solution

The fourth proportional to 1,464.95, 2,194.36 and 685.62 is: 1,027.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,464.95 : 2,194.36 = 685.62 : x
  2. Step 2: Convert to fraction form
    1,464.95/2,194.36 = 685.62/x
  3. Step 3: Cross multiply
    1,464.95x = 2,194.36 × 685.62
  4. Step 4: Simplify right side
    1,464.95x = 1,504,497.10
  5. Step 5: Solve for x
    x = 1,504,497.10/1,464.95
  6. Step 6: Final answer
    x = 1,027.00

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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.