Home / 594.02-820.18-398

Finding the Fourth Proportional to 594.02, 820.18 and 398

Calculator

Solution

The fourth proportional to 594.02, 820.18 and 398 is: 549.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    594.02 : 820.18 = 398 : x
  2. Step 2: Convert to fraction form
    594.02/820.18 = 398/x
  3. Step 3: Cross multiply
    594.02x = 820.18 × 398
  4. Step 4: Simplify right side
    594.02x = 326,431.64
  5. Step 5: Solve for x
    x = 326,431.64/594.02
  6. Step 6: Final answer
    x = 549.53

Related Problems

Find fourth proportional to 297.01, 410.09 and 199
Half scale
Find fourth proportional to 1,188.04, 1,640.36 and 796
Double scale
Find fourth proportional to 595.02, 821.56 and 399
Similar ratio
Find fourth proportional to 891.03, 1,230.27 and 597
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.