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Finding the Fourth Proportional to 682.37, 1,017.90 and 673.46

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Solution

The fourth proportional to 682.37, 1,017.90 and 673.46 is: 1,004.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    682.37 : 1,017.90 = 673.46 : x
  2. Step 2: Convert to fraction form
    682.37/1,017.90 = 673.46/x
  3. Step 3: Cross multiply
    682.37x = 1,017.90 × 673.46
  4. Step 4: Simplify right side
    682.37x = 685,509.84
  5. Step 5: Solve for x
    x = 685,509.84/682.37
  6. Step 6: Final answer
    x = 1,004.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.