Home / 305.25-637.50

Finding the Third Proportional to 305.25 and 637.50

Calculator

Solution

The third proportional to 305.25 and 637.50 is: 1,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.25 : 637.50 = 637.50 : x
  2. Step 2: Convert to fraction form
    305.25/637.50 = 637.50/x
  3. Step 3: Cross multiply
    305.25x = 637.50 × 637.50
  4. Step 4: Simplify right side
    305.25x = 406,406.25
  5. Step 5: Solve for x
    x = 406,406.25/305.25
  6. Step 6: Final answer
    x = 1,331.39

Related Problems

Find third proportional to 152.63 and 318.75
Half scale
Find third proportional to 610.50 and 1,275
Double scale
Find third proportional to 307 and 642
Similar ratio
Find third proportional to 457.88 and 956.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.