Home / 439.88-655.88

Finding the Third Proportional to 439.88 and 655.88

Calculator

Solution

The third proportional to 439.88 and 655.88 is: 977.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    439.88 : 655.88 = 655.88 : x
  2. Step 2: Convert to fraction form
    439.88/655.88 = 655.88/x
  3. Step 3: Cross multiply
    439.88x = 655.88 × 655.88
  4. Step 4: Simplify right side
    439.88x = 430,172.02
  5. Step 5: Solve for x
    x = 430,172.02/439.88
  6. Step 6: Final answer
    x = 977.94

Related Problems

Find third proportional to 219.94 and 327.94
Half scale
Find third proportional to 879.75 and 1,311.75
Double scale
Find third proportional to 442 and 659
Similar ratio
Find third proportional to 659.81 and 983.81
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.