Home / 253.38-403

Finding the Third Proportional to 253.38 and 403

Calculator

Solution

The third proportional to 253.38 and 403 is: 640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.38 : 403 = 403 : x
  2. Step 2: Convert to fraction form
    253.38/403 = 403/x
  3. Step 3: Cross multiply
    253.38x = 403 × 403
  4. Step 4: Simplify right side
    253.38x = 162,409
  5. Step 5: Solve for x
    x = 162,409/253.38
  6. Step 6: Final answer
    x = 640.98

Related Problems

Find third proportional to 126.69 and 201.50
Half scale
Find third proportional to 506.75 and 806
Double scale
Find third proportional to 255 and 406
Similar ratio
Find third proportional to 380.06 and 604.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.