Home / 269.81-387.75

Finding the Third Proportional to 269.81 and 387.75

Calculator

Solution

The third proportional to 269.81 and 387.75 is: 557.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    269.81 : 387.75 = 387.75 : x
  2. Step 2: Convert to fraction form
    269.81/387.75 = 387.75/x
  3. Step 3: Cross multiply
    269.81x = 387.75 × 387.75
  4. Step 4: Simplify right side
    269.81x = 150,350.06
  5. Step 5: Solve for x
    x = 150,350.06/269.81
  6. Step 6: Final answer
    x = 557.24

Related Problems

Find third proportional to 134.91 and 193.88
Half scale
Find third proportional to 539.63 and 775.50
Double scale
Find third proportional to 272 and 391
Similar ratio
Find third proportional to 404.72 and 581.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.