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Finding the Fourth Proportional to 656.49, 984.05 and 622.31

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Solution

The fourth proportional to 656.49, 984.05 and 622.31 is: 932.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.49 : 984.05 = 622.31 : x
  2. Step 2: Convert to fraction form
    656.49/984.05 = 622.31/x
  3. Step 3: Cross multiply
    656.49x = 984.05 × 622.31
  4. Step 4: Simplify right side
    656.49x = 612,383.50
  5. Step 5: Solve for x
    x = 612,383.50/656.49
  6. Step 6: Final answer
    x = 932.81

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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.