Home / 249.31-356.88

Finding the Third Proportional to 249.31 and 356.88

Calculator

Solution

The third proportional to 249.31 and 356.88 is: 510.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.31 : 356.88 = 356.88 : x
  2. Step 2: Convert to fraction form
    249.31/356.88 = 356.88/x
  3. Step 3: Cross multiply
    249.31x = 356.88 × 356.88
  4. Step 4: Simplify right side
    249.31x = 127,359.77
  5. Step 5: Solve for x
    x = 127,359.77/249.31
  6. Step 6: Final answer
    x = 510.84

Related Problems

Find third proportional to 124.66 and 178.44
Half scale
Find third proportional to 498.63 and 713.75
Double scale
Find third proportional to 251 and 360
Similar ratio
Find third proportional to 373.97 and 535.31
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.