Home / 318.38-696.54

Finding the Third Proportional to 318.38 and 696.54

Calculator

Solution

The third proportional to 318.38 and 696.54 is: 1,523.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.38 : 696.54 = 696.54 : x
  2. Step 2: Convert to fraction form
    318.38/696.54 = 696.54/x
  3. Step 3: Cross multiply
    318.38x = 696.54 × 696.54
  4. Step 4: Simplify right side
    318.38x = 485,170.75
  5. Step 5: Solve for x
    x = 485,170.75/318.38
  6. Step 6: Final answer
    x = 1,523.86

Related Problems

Find third proportional to 159.19 and 348.27
Half scale
Find third proportional to 636.77 and 1,393.08
Double scale
Find third proportional to 320 and 701
Similar ratio
Find third proportional to 477.58 and 1,044.81
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.