Home / 379.69-442.97

Finding the Third Proportional to 379.69 and 442.97

Calculator

Solution

The third proportional to 379.69 and 442.97 is: 516.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.69 : 442.97 = 442.97 : x
  2. Step 2: Convert to fraction form
    379.69/442.97 = 442.97/x
  3. Step 3: Cross multiply
    379.69x = 442.97 × 442.97
  4. Step 4: Simplify right side
    379.69x = 196,221.31
  5. Step 5: Solve for x
    x = 196,221.31/379.69
  6. Step 6: Final answer
    x = 516.80

Related Problems

Find third proportional to 189.84 and 221.48
Half scale
Find third proportional to 759.38 and 885.94
Double scale
Find third proportional to 382 and 445
Similar ratio
Find third proportional to 569.53 and 664.45
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.