Home / 191.63-420

Finding the Third Proportional to 191.63 and 420

Calculator

Solution

The third proportional to 191.63 and 420 is: 920.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    191.63 : 420 = 420 : x
  2. Step 2: Convert to fraction form
    191.63/420 = 420/x
  3. Step 3: Cross multiply
    191.63x = 420 × 420
  4. Step 4: Simplify right side
    191.63x = 176,400
  5. Step 5: Solve for x
    x = 176,400/191.63
  6. Step 6: Final answer
    x = 920.55

Related Problems

Find third proportional to 95.81 and 210
Half scale
Find third proportional to 383.25 and 840
Double scale
Find third proportional to 194 and 424
Similar ratio
Find third proportional to 287.44 and 630
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.