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Finding the Fourth Proportional to 660.64, 995.98 and 625.36

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Solution

The fourth proportional to 660.64, 995.98 and 625.36 is: 942.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.64 : 995.98 = 625.36 : x
  2. Step 2: Convert to fraction form
    660.64/995.98 = 625.36/x
  3. Step 3: Cross multiply
    660.64x = 995.98 × 625.36
  4. Step 4: Simplify right side
    660.64x = 622,846.05
  5. Step 5: Solve for x
    x = 622,846.05/660.64
  6. Step 6: Final answer
    x = 942.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.