Home / 245.06-310.31

Finding the Third Proportional to 245.06 and 310.31

Calculator

Solution

The third proportional to 245.06 and 310.31 is: 392.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245.06 : 310.31 = 310.31 : x
  2. Step 2: Convert to fraction form
    245.06/310.31 = 310.31/x
  3. Step 3: Cross multiply
    245.06x = 310.31 × 310.31
  4. Step 4: Simplify right side
    245.06x = 96,293.85
  5. Step 5: Solve for x
    x = 96,293.85/245.06
  6. Step 6: Final answer
    x = 392.94

Related Problems

Find third proportional to 122.53 and 155.16
Half scale
Find third proportional to 490.13 and 620.63
Double scale
Find third proportional to 247 and 313
Similar ratio
Find third proportional to 367.59 and 465.47
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.