Home / 608-912.12-266

Finding the Fourth Proportional to 608, 912.12 and 266

Calculator

Solution

The fourth proportional to 608, 912.12 and 266 is: 399.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    608 : 912.12 = 266 : x
  2. Step 2: Convert to fraction form
    608/912.12 = 266/x
  3. Step 3: Cross multiply
    608x = 912.12 × 266
  4. Step 4: Simplify right side
    608x = 242,623.92
  5. Step 5: Solve for x
    x = 242,623.92/608
  6. Step 6: Final answer
    x = 399.05

Related Problems

Find fourth proportional to 304, 456.06 and 133
Half scale
Find fourth proportional to 1,216, 1,824.24 and 532
Double scale
Find fourth proportional to 609, 913.62 and 267
Similar ratio
Find fourth proportional to 912, 1,368.18 and 399
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.