Home / 318.50-351

Finding the Third Proportional to 318.50 and 351

Calculator

Solution

The third proportional to 318.50 and 351 is: 386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.50 : 351 = 351 : x
  2. Step 2: Convert to fraction form
    318.50/351 = 351/x
  3. Step 3: Cross multiply
    318.50x = 351 × 351
  4. Step 4: Simplify right side
    318.50x = 123,201
  5. Step 5: Solve for x
    x = 123,201/318.50
  6. Step 6: Final answer
    x = 386.82

Related Problems

Find third proportional to 159.25 and 175.50
Half scale
Find third proportional to 637 and 702
Double scale
Find third proportional to 321 and 353
Similar ratio
Find third proportional to 477.75 and 526.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.