Home / 484.10-691.51

Finding the Third Proportional to 484.10 and 691.51

Calculator

Solution

The third proportional to 484.10 and 691.51 is: 987.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.10 : 691.51 = 691.51 : x
  2. Step 2: Convert to fraction form
    484.10/691.51 = 691.51/x
  3. Step 3: Cross multiply
    484.10x = 691.51 × 691.51
  4. Step 4: Simplify right side
    484.10x = 478,180.35
  5. Step 5: Solve for x
    x = 478,180.35/484.10
  6. Step 6: Final answer
    x = 987.77

Related Problems

Find third proportional to 242.05 and 345.75
Half scale
Find third proportional to 968.20 and 1,383.01
Double scale
Find third proportional to 486 and 694
Similar ratio
Find third proportional to 726.15 and 1,037.26
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.