Home / 554.63-861.75

Finding the Third Proportional to 554.63 and 861.75

Calculator

Solution

The third proportional to 554.63 and 861.75 is: 1,338.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.63 : 861.75 = 861.75 : x
  2. Step 2: Convert to fraction form
    554.63/861.75 = 861.75/x
  3. Step 3: Cross multiply
    554.63x = 861.75 × 861.75
  4. Step 4: Simplify right side
    554.63x = 742,613.06
  5. Step 5: Solve for x
    x = 742,613.06/554.63
  6. Step 6: Final answer
    x = 1,338.95

Related Problems

Find third proportional to 277.31 and 430.88
Half scale
Find third proportional to 1,109.25 and 1,723.50
Double scale
Find third proportional to 557 and 865
Similar ratio
Find third proportional to 831.94 and 1,292.63
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.