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Finding the Fourth Proportional to 695.82, 1,043.71 and 208.88

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Solution

The fourth proportional to 695.82, 1,043.71 and 208.88 is: 313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.82 : 1,043.71 = 208.88 : x
  2. Step 2: Convert to fraction form
    695.82/1,043.71 = 208.88/x
  3. Step 3: Cross multiply
    695.82x = 1,043.71 × 208.88
  4. Step 4: Simplify right side
    695.82x = 218,004.40
  5. Step 5: Solve for x
    x = 218,004.40/695.82
  6. Step 6: Final answer
    x = 313.31

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.