Home / 242.25-340.50

Finding the Third Proportional to 242.25 and 340.50

Calculator

Solution

The third proportional to 242.25 and 340.50 is: 478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.25 : 340.50 = 340.50 : x
  2. Step 2: Convert to fraction form
    242.25/340.50 = 340.50/x
  3. Step 3: Cross multiply
    242.25x = 340.50 × 340.50
  4. Step 4: Simplify right side
    242.25x = 115,940.25
  5. Step 5: Solve for x
    x = 115,940.25/242.25
  6. Step 6: Final answer
    x = 478.60

Related Problems

Find third proportional to 121.13 and 170.25
Half scale
Find third proportional to 484.50 and 681
Double scale
Find third proportional to 244 and 343
Similar ratio
Find third proportional to 363.38 and 510.75
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.