Home / 368-521

Finding the Third Proportional to 368 and 521

Calculator

Solution

The third proportional to 368 and 521 is: 737.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    368 : 521 = 521 : x
  2. Step 2: Convert to fraction form
    368/521 = 521/x
  3. Step 3: Cross multiply
    368x = 521 × 521
  4. Step 4: Simplify right side
    368x = 271,441
  5. Step 5: Solve for x
    x = 271,441/368
  6. Step 6: Final answer
    x = 737.61

Related Problems

Find third proportional to 184 and 260.50
Half scale
Find third proportional to 736 and 1,042
Double scale
Find third proportional to 370 and 524
Similar ratio
Find third proportional to 552 and 781.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.