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Finding the Third Proportional to 647.50 and 983

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Solution

The third proportional to 647.50 and 983 is: 1,492.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    647.50 : 983 = 983 : x
  2. Step 2: Convert to fraction form
    647.50/983 = 983/x
  3. Step 3: Cross multiply
    647.50x = 983 × 983
  4. Step 4: Simplify right side
    647.50x = 966,289
  5. Step 5: Solve for x
    x = 966,289/647.50
  6. Step 6: Final answer
    x = 1,492.34

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.