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Finding the Fourth Proportional to 682.75, 942.20 and 650.35

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Solution

The fourth proportional to 682.75, 942.20 and 650.35 is: 897.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.75 : 942.20 = 650.35 : x
  2. Step 2: Convert to fraction form
    682.75/942.20 = 650.35/x
  3. Step 3: Cross multiply
    682.75x = 942.20 × 650.35
  4. Step 4: Simplify right side
    682.75x = 612,759.77
  5. Step 5: Solve for x
    x = 612,759.77/682.75
  6. Step 6: Final answer
    x = 897.49

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1.5x scale

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.