Home / 245.50-345

Finding the Third Proportional to 245.50 and 345

Calculator

Solution

The third proportional to 245.50 and 345 is: 484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.50 : 345 = 345 : x
  2. Step 2: Convert to fraction form
    245.50/345 = 345/x
  3. Step 3: Cross multiply
    245.50x = 345 × 345
  4. Step 4: Simplify right side
    245.50x = 119,025
  5. Step 5: Solve for x
    x = 119,025/245.50
  6. Step 6: Final answer
    x = 484.83

Related Problems

Find third proportional to 122.75 and 172.50
Half scale
Find third proportional to 491 and 690
Double scale
Find third proportional to 248 and 348
Similar ratio
Find third proportional to 368.25 and 517.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.