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Finding the Third Proportional to 672 and 983.63

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Solution

The third proportional to 672 and 983.63 is: 1,439.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    672 : 983.63 = 983.63 : x
  2. Step 2: Convert to fraction form
    672/983.63 = 983.63/x
  3. Step 3: Cross multiply
    672x = 983.63 × 983.63
  4. Step 4: Simplify right side
    672x = 967,518.14
  5. Step 5: Solve for x
    x = 967,518.14/672
  6. Step 6: Final answer
    x = 1,439.76

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.