Home / 447-646.50

Finding the Third Proportional to 447 and 646.50

Calculator

Solution

The third proportional to 447 and 646.50 is: 935.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    447 : 646.50 = 646.50 : x
  2. Step 2: Convert to fraction form
    447/646.50 = 646.50/x
  3. Step 3: Cross multiply
    447x = 646.50 × 646.50
  4. Step 4: Simplify right side
    447x = 417,962.25
  5. Step 5: Solve for x
    x = 417,962.25/447
  6. Step 6: Final answer
    x = 935.04

Related Problems

Find third proportional to 223.50 and 323.25
Half scale
Find third proportional to 894 and 1,293
Double scale
Find third proportional to 449 and 649
Similar ratio
Find third proportional to 670.50 and 969.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.