Home / 276.75-424.13

Finding the Third Proportional to 276.75 and 424.13

Calculator

Solution

The third proportional to 276.75 and 424.13 is: 649.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.75 : 424.13 = 424.13 : x
  2. Step 2: Convert to fraction form
    276.75/424.13 = 424.13/x
  3. Step 3: Cross multiply
    276.75x = 424.13 × 424.13
  4. Step 4: Simplify right side
    276.75x = 179,882.02
  5. Step 5: Solve for x
    x = 179,882.02/276.75
  6. Step 6: Final answer
    x = 649.98

Related Problems

Find third proportional to 138.38 and 212.06
Half scale
Find third proportional to 553.50 and 848.25
Double scale
Find third proportional to 279 and 427
Similar ratio
Find third proportional to 415.13 and 636.19
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.