Home / 200.88-311.75

Finding the Third Proportional to 200.88 and 311.75

Calculator

Solution

The third proportional to 200.88 and 311.75 is: 483.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    200.88 : 311.75 = 311.75 : x
  2. Step 2: Convert to fraction form
    200.88/311.75 = 311.75/x
  3. Step 3: Cross multiply
    200.88x = 311.75 × 311.75
  4. Step 4: Simplify right side
    200.88x = 97,188.06
  5. Step 5: Solve for x
    x = 97,188.06/200.88
  6. Step 6: Final answer
    x = 483.82

Related Problems

Find third proportional to 100.44 and 155.88
Half scale
Find third proportional to 401.75 and 623.50
Double scale
Find third proportional to 203 and 315
Similar ratio
Find third proportional to 301.31 and 467.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.