Home / 379-665

Finding the Third Proportional to 379 and 665

Calculator

Solution

The third proportional to 379 and 665 is: 1,166.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    379 : 665 = 665 : x
  2. Step 2: Convert to fraction form
    379/665 = 665/x
  3. Step 3: Cross multiply
    379x = 665 × 665
  4. Step 4: Simplify right side
    379x = 442,225
  5. Step 5: Solve for x
    x = 442,225/379
  6. Step 6: Final answer
    x = 1,166.82

Related Problems

Find third proportional to 189.50 and 332.50
Half scale
Find third proportional to 758 and 1,330
Double scale
Find third proportional to 381 and 669
Similar ratio
Find third proportional to 568.50 and 997.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.75) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.