Home / 357.38-645.94

Finding the Third Proportional to 357.38 and 645.94

Calculator

Solution

The third proportional to 357.38 and 645.94 is: 1,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.38 : 645.94 = 645.94 : x
  2. Step 2: Convert to fraction form
    357.38/645.94 = 645.94/x
  3. Step 3: Cross multiply
    357.38x = 645.94 × 645.94
  4. Step 4: Simplify right side
    357.38x = 417,235.25
  5. Step 5: Solve for x
    x = 417,235.25/357.38
  6. Step 6: Final answer
    x = 1,167.50

Related Problems

Find third proportional to 178.69 and 322.97
Half scale
Find third proportional to 714.75 and 1,291.88
Double scale
Find third proportional to 359 and 650
Similar ratio
Find third proportional to 536.06 and 968.91
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.