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Finding the Fourth Proportional to 682.06, 940.46 and 634.36

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Solution

The fourth proportional to 682.06, 940.46 and 634.36 is: 874.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.06 : 940.46 = 634.36 : x
  2. Step 2: Convert to fraction form
    682.06/940.46 = 634.36/x
  3. Step 3: Cross multiply
    682.06x = 940.46 × 634.36
  4. Step 4: Simplify right side
    682.06x = 596,590.21
  5. Step 5: Solve for x
    x = 596,590.21/682.06
  6. Step 6: Final answer
    x = 874.69

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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.