Home / 248.63-349.31

Finding the Third Proportional to 248.63 and 349.31

Calculator

Solution

The third proportional to 248.63 and 349.31 is: 490.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.63 : 349.31 = 349.31 : x
  2. Step 2: Convert to fraction form
    248.63/349.31 = 349.31/x
  3. Step 3: Cross multiply
    248.63x = 349.31 × 349.31
  4. Step 4: Simplify right side
    248.63x = 122,019.22
  5. Step 5: Solve for x
    x = 122,019.22/248.63
  6. Step 6: Final answer
    x = 490.78

Related Problems

Find third proportional to 124.31 and 174.66
Half scale
Find third proportional to 497.25 and 698.63
Double scale
Find third proportional to 251 and 352
Similar ratio
Find third proportional to 372.94 and 523.97
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.