Home / 615.75-871.50

Finding the Third Proportional to 615.75 and 871.50

Calculator

Solution

The third proportional to 615.75 and 871.50 is: 1,233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.75 : 871.50 = 871.50 : x
  2. Step 2: Convert to fraction form
    615.75/871.50 = 871.50/x
  3. Step 3: Cross multiply
    615.75x = 871.50 × 871.50
  4. Step 4: Simplify right side
    615.75x = 759,512.25
  5. Step 5: Solve for x
    x = 759,512.25/615.75
  6. Step 6: Final answer
    x = 1,233.48

Related Problems

Find third proportional to 307.88 and 435.75
Half scale
Find third proportional to 1,231.50 and 1,743
Double scale
Find third proportional to 618 and 874
Similar ratio
Find third proportional to 923.63 and 1,307.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.