Home / 560.81-800.91

Finding the Third Proportional to 560.81 and 800.91

Calculator

Solution

The third proportional to 560.81 and 800.91 is: 1,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.81 : 800.91 = 800.91 : x
  2. Step 2: Convert to fraction form
    560.81/800.91 = 800.91/x
  3. Step 3: Cross multiply
    560.81x = 800.91 × 800.91
  4. Step 4: Simplify right side
    560.81x = 641,450.82
  5. Step 5: Solve for x
    x = 641,450.82/560.81
  6. Step 6: Final answer
    x = 1,143.79

Related Problems

Find third proportional to 280.41 and 400.45
Half scale
Find third proportional to 1,121.63 and 1,601.81
Double scale
Find third proportional to 563 and 804
Similar ratio
Find third proportional to 841.22 and 1,201.36
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.