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Finding the Fourth Proportional to 695.11, 1,043.37 and 465.60

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Solution

The fourth proportional to 695.11, 1,043.37 and 465.60 is: 698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.11 : 1,043.37 = 465.60 : x
  2. Step 2: Convert to fraction form
    695.11/1,043.37 = 465.60/x
  3. Step 3: Cross multiply
    695.11x = 1,043.37 × 465.60
  4. Step 4: Simplify right side
    695.11x = 485,791.99
  5. Step 5: Solve for x
    x = 485,791.99/695.11
  6. Step 6: Final answer
    x = 698.88

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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.