Home / 309-476.25

Finding the Third Proportional to 309 and 476.25

Calculator

Solution

The third proportional to 309 and 476.25 is: 734.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    309 : 476.25 = 476.25 : x
  2. Step 2: Convert to fraction form
    309/476.25 = 476.25/x
  3. Step 3: Cross multiply
    309x = 476.25 × 476.25
  4. Step 4: Simplify right side
    309x = 226,814.06
  5. Step 5: Solve for x
    x = 226,814.06/309
  6. Step 6: Final answer
    x = 734.03

Related Problems

Find third proportional to 154.50 and 238.13
Half scale
Find third proportional to 618 and 952.50
Double scale
Find third proportional to 311 and 479
Similar ratio
Find third proportional to 463.50 and 714.38
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.