Home / 542.75-653.75

Finding the Third Proportional to 542.75 and 653.75

Calculator

Solution

The third proportional to 542.75 and 653.75 is: 787.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.75 : 653.75 = 653.75 : x
  2. Step 2: Convert to fraction form
    542.75/653.75 = 653.75/x
  3. Step 3: Cross multiply
    542.75x = 653.75 × 653.75
  4. Step 4: Simplify right side
    542.75x = 427,389.06
  5. Step 5: Solve for x
    x = 427,389.06/542.75
  6. Step 6: Final answer
    x = 787.45

Related Problems

Find third proportional to 271.38 and 326.88
Half scale
Find third proportional to 1,085.50 and 1,307.50
Double scale
Find third proportional to 545 and 656
Similar ratio
Find third proportional to 814.13 and 980.63
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.