Home / 43-58

Finding the Third Proportional to 43 and 58

Calculator

Solution

The third proportional to 43 and 58 is: 78.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    43 : 58 = 58 : x
  2. Step 2: Convert to fraction form
    43/58 = 58/x
  3. Step 3: Cross multiply
    43x = 58 × 58
  4. Step 4: Simplify right side
    43x = 3,364
  5. Step 5: Solve for x
    x = 3,364/43
  6. Step 6: Final answer
    x = 78.23

Related Problems

Find third proportional to 21.50 and 29
Half scale
Find third proportional to 86 and 116
Double scale
Find third proportional to 45 and 61
Similar ratio
Find third proportional to 64.50 and 87
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.