Home / 238.50-515.25

Finding the Third Proportional to 238.50 and 515.25

Calculator

Solution

The third proportional to 238.50 and 515.25 is: 1,113.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.50 : 515.25 = 515.25 : x
  2. Step 2: Convert to fraction form
    238.50/515.25 = 515.25/x
  3. Step 3: Cross multiply
    238.50x = 515.25 × 515.25
  4. Step 4: Simplify right side
    238.50x = 265,482.56
  5. Step 5: Solve for x
    x = 265,482.56/238.50
  6. Step 6: Final answer
    x = 1,113.13

Related Problems

Find third proportional to 119.25 and 257.63
Half scale
Find third proportional to 477 and 1,030.50
Double scale
Find third proportional to 241 and 520
Similar ratio
Find third proportional to 357.75 and 772.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.