Home / 35.30-81.35

Finding the Third Proportional to 35.30 and 81.35

Calculator

Solution

The third proportional to 35.30 and 81.35 is: 187.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    35.30 : 81.35 = 81.35 : x
  2. Step 2: Convert to fraction form
    35.30/81.35 = 81.35/x
  3. Step 3: Cross multiply
    35.30x = 81.35 × 81.35
  4. Step 4: Simplify right side
    35.30x = 6,618.08
  5. Step 5: Solve for x
    x = 6,618.08/35.30
  6. Step 6: Final answer
    x = 187.50

Related Problems

Find third proportional to 17.65 and 40.68
Half scale
Find third proportional to 70.59 and 162.70
Double scale
Find third proportional to 37 and 86
Similar ratio
Find third proportional to 52.95 and 122.03
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.