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Finding the Fourth Proportional to 699.02, 961.99 and 680.94

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Solution

The fourth proportional to 699.02, 961.99 and 680.94 is: 937.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    699.02 : 961.99 = 680.94 : x
  2. Step 2: Convert to fraction form
    699.02/961.99 = 680.94/x
  3. Step 3: Cross multiply
    699.02x = 961.99 × 680.94
  4. Step 4: Simplify right side
    699.02x = 655,057.47
  5. Step 5: Solve for x
    x = 655,057.47/699.02
  6. Step 6: Final answer
    x = 937.11

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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.