Home / 216.84-335.81

Finding the Third Proportional to 216.84 and 335.81

Calculator

Solution

The third proportional to 216.84 and 335.81 is: 520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.84 : 335.81 = 335.81 : x
  2. Step 2: Convert to fraction form
    216.84/335.81 = 335.81/x
  3. Step 3: Cross multiply
    216.84x = 335.81 × 335.81
  4. Step 4: Simplify right side
    216.84x = 112,770.04
  5. Step 5: Solve for x
    x = 112,770.04/216.84
  6. Step 6: Final answer
    x = 520.05

Related Problems

Find third proportional to 108.42 and 167.91
Half scale
Find third proportional to 433.69 and 671.63
Double scale
Find third proportional to 219 and 339
Similar ratio
Find third proportional to 325.27 and 503.72
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.