Home / 349.50-615.75

Finding the Third Proportional to 349.50 and 615.75

Calculator

Solution

The third proportional to 349.50 and 615.75 is: 1,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.50 : 615.75 = 615.75 : x
  2. Step 2: Convert to fraction form
    349.50/615.75 = 615.75/x
  3. Step 3: Cross multiply
    349.50x = 615.75 × 615.75
  4. Step 4: Simplify right side
    349.50x = 379,148.06
  5. Step 5: Solve for x
    x = 379,148.06/349.50
  6. Step 6: Final answer
    x = 1,084.83

Related Problems

Find third proportional to 174.75 and 307.88
Half scale
Find third proportional to 699 and 1,231.50
Double scale
Find third proportional to 352 and 619
Similar ratio
Find third proportional to 524.25 and 923.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.76) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.