Home / 540.32-745.52-513

Finding the Fourth Proportional to 540.32, 745.52 and 513

Calculator

Solution

The fourth proportional to 540.32, 745.52 and 513 is: 707.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    540.32 : 745.52 = 513 : x
  2. Step 2: Convert to fraction form
    540.32/745.52 = 513/x
  3. Step 3: Cross multiply
    540.32x = 745.52 × 513
  4. Step 4: Simplify right side
    540.32x = 382,449.20
  5. Step 5: Solve for x
    x = 382,449.20/540.32
  6. Step 6: Final answer
    x = 707.83

Related Problems

Find fourth proportional to 270.16, 372.76 and 256.50
Half scale
Find fourth proportional to 1,080.63, 1,491.03 and 1,026
Double scale
Find fourth proportional to 541.32, 746.89 and 514
Similar ratio
Find fourth proportional to 810.47, 1,118.27 and 769.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.