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Finding the Fourth Proportional to 656.37, 984.60 and 439.29

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Solution

The fourth proportional to 656.37, 984.60 and 439.29 is: 658.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.37 : 984.60 = 439.29 : x
  2. Step 2: Convert to fraction form
    656.37/984.60 = 439.29/x
  3. Step 3: Cross multiply
    656.37x = 984.60 × 439.29
  4. Step 4: Simplify right side
    656.37x = 432,524.93
  5. Step 5: Solve for x
    x = 432,524.93/656.37
  6. Step 6: Final answer
    x = 658.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.