Home / 178.59-276.47

Finding the Third Proportional to 178.59 and 276.47

Calculator

Solution

The third proportional to 178.59 and 276.47 is: 427.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.59 : 276.47 = 276.47 : x
  2. Step 2: Convert to fraction form
    178.59/276.47 = 276.47/x
  3. Step 3: Cross multiply
    178.59x = 276.47 × 276.47
  4. Step 4: Simplify right side
    178.59x = 76,434.97
  5. Step 5: Solve for x
    x = 76,434.97/178.59
  6. Step 6: Final answer
    x = 427.98

Related Problems

Find third proportional to 89.30 and 138.23
Half scale
Find third proportional to 357.19 and 552.94
Double scale
Find third proportional to 181 and 280
Similar ratio
Find third proportional to 267.89 and 414.70
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.