Home / 131.25-207

Finding the Third Proportional to 131.25 and 207

Calculator

Solution

The third proportional to 131.25 and 207 is: 326.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.25 : 207 = 207 : x
  2. Step 2: Convert to fraction form
    131.25/207 = 207/x
  3. Step 3: Cross multiply
    131.25x = 207 × 207
  4. Step 4: Simplify right side
    131.25x = 42,849
  5. Step 5: Solve for x
    x = 42,849/131.25
  6. Step 6: Final answer
    x = 326.47

Related Problems

Find third proportional to 65.63 and 103.50
Half scale
Find third proportional to 262.50 and 414
Double scale
Find third proportional to 133 and 210
Similar ratio
Find third proportional to 196.88 and 310.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.