Home / 449-620-356.23

Finding the Fourth Proportional to 449, 620 and 356.23

Calculator

Solution

The fourth proportional to 449, 620 and 356.23 is: 491.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    449 : 620 = 356.23 : x
  2. Step 2: Convert to fraction form
    449/620 = 356.23/x
  3. Step 3: Cross multiply
    449x = 620 × 356.23
  4. Step 4: Simplify right side
    449x = 220,862.60
  5. Step 5: Solve for x
    x = 220,862.60/449
  6. Step 6: Final answer
    x = 491.90

Related Problems

Find fourth proportional to 224.50, 310 and 178.12
Half scale
Find fourth proportional to 898, 1,240 and 712.46
Double scale
Find fourth proportional to 450, 621.38 and 357.23
Similar ratio
Find fourth proportional to 673.50, 930 and 534.35
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.