Home / 545.81-831.56

Finding the Third Proportional to 545.81 and 831.56

Calculator

Solution

The third proportional to 545.81 and 831.56 is: 1,266.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.81 : 831.56 = 831.56 : x
  2. Step 2: Convert to fraction form
    545.81/831.56 = 831.56/x
  3. Step 3: Cross multiply
    545.81x = 831.56 × 831.56
  4. Step 4: Simplify right side
    545.81x = 691,496.19
  5. Step 5: Solve for x
    x = 691,496.19/545.81
  6. Step 6: Final answer
    x = 1,266.91

Related Problems

Find third proportional to 272.91 and 415.78
Half scale
Find third proportional to 1,091.63 and 1,663.13
Double scale
Find third proportional to 548 and 835
Similar ratio
Find third proportional to 818.72 and 1,247.34
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.