Home / 397-613.50

Finding the Third Proportional to 397 and 613.50

Calculator

Solution

The third proportional to 397 and 613.50 is: 948.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    397 : 613.50 = 613.50 : x
  2. Step 2: Convert to fraction form
    397/613.50 = 613.50/x
  3. Step 3: Cross multiply
    397x = 613.50 × 613.50
  4. Step 4: Simplify right side
    397x = 376,382.25
  5. Step 5: Solve for x
    x = 376,382.25/397
  6. Step 6: Final answer
    x = 948.07

Related Problems

Find third proportional to 198.50 and 306.75
Half scale
Find third proportional to 794 and 1,227
Double scale
Find third proportional to 399 and 617
Similar ratio
Find third proportional to 595.50 and 920.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.