Home / 432.21-644.84

Finding the Third Proportional to 432.21 and 644.84

Calculator

Solution

The third proportional to 432.21 and 644.84 is: 962.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    432.21 : 644.84 = 644.84 : x
  2. Step 2: Convert to fraction form
    432.21/644.84 = 644.84/x
  3. Step 3: Cross multiply
    432.21x = 644.84 × 644.84
  4. Step 4: Simplify right side
    432.21x = 415,813.39
  5. Step 5: Solve for x
    x = 415,813.39/432.21
  6. Step 6: Final answer
    x = 962.06

Related Problems

Find third proportional to 216.11 and 322.42
Half scale
Find third proportional to 864.42 and 1,289.67
Double scale
Find third proportional to 434 and 648
Similar ratio
Find third proportional to 648.32 and 967.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.