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Finding the Fourth Proportional to 695.55, 957.92 and 680.43

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Solution

The fourth proportional to 695.55, 957.92 and 680.43 is: 937.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    695.55 : 957.92 = 680.43 : x
  2. Step 2: Convert to fraction form
    695.55/957.92 = 680.43/x
  3. Step 3: Cross multiply
    695.55x = 957.92 × 680.43
  4. Step 4: Simplify right side
    695.55x = 651,794.10
  5. Step 5: Solve for x
    x = 651,794.10/695.55
  6. Step 6: Final answer
    x = 937.09

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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.