Home / 409.93-615-336.93

Finding the Fourth Proportional to 409.93, 615 and 336.93

Calculator

Solution

The fourth proportional to 409.93, 615 and 336.93 is: 505.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.93 : 615 = 336.93 : x
  2. Step 2: Convert to fraction form
    409.93/615 = 336.93/x
  3. Step 3: Cross multiply
    409.93x = 615 × 336.93
  4. Step 4: Simplify right side
    409.93x = 207,211.95
  5. Step 5: Solve for x
    x = 207,211.95/409.93
  6. Step 6: Final answer
    x = 505.48

Related Problems

Find fourth proportional to 204.97, 307.50 and 168.47
Half scale
Find fourth proportional to 819.86, 1,230 and 673.86
Double scale
Find fourth proportional to 410.93, 616.50 and 337.93
Similar ratio
Find fourth proportional to 614.90, 922.50 and 505.40
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.