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Finding the Third Proportional to 651.50 and 983.75

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Solution

The third proportional to 651.50 and 983.75 is: 1,485.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.50 : 983.75 = 983.75 : x
  2. Step 2: Convert to fraction form
    651.50/983.75 = 983.75/x
  3. Step 3: Cross multiply
    651.50x = 983.75 × 983.75
  4. Step 4: Simplify right side
    651.50x = 967,764.06
  5. Step 5: Solve for x
    x = 967,764.06/651.50
  6. Step 6: Final answer
    x = 1,485.44

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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.