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Finding the Third Proportional to 665.75 and 973.75

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Solution

The third proportional to 665.75 and 973.75 is: 1,424.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.75 : 973.75 = 973.75 : x
  2. Step 2: Convert to fraction form
    665.75/973.75 = 973.75/x
  3. Step 3: Cross multiply
    665.75x = 973.75 × 973.75
  4. Step 4: Simplify right side
    665.75x = 948,189.06
  5. Step 5: Solve for x
    x = 948,189.06/665.75
  6. Step 6: Final answer
    x = 1,424.24

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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.