Home / 948-1,422-298.76

Finding the Fourth Proportional to 948, 1,422 and 298.76

Calculator

Solution

The fourth proportional to 948, 1,422 and 298.76 is: 448.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    948 : 1,422 = 298.76 : x
  2. Step 2: Convert to fraction form
    948/1,422 = 298.76/x
  3. Step 3: Cross multiply
    948x = 1,422 × 298.76
  4. Step 4: Simplify right side
    948x = 424,829.61
  5. Step 5: Solve for x
    x = 424,829.61/948
  6. Step 6: Final answer
    x = 448.13

Related Problems

Find fourth proportional to 474, 711 and 149.38
Half scale
Find fourth proportional to 1,896, 2,844 and 597.51
Double scale
Find fourth proportional to 949, 1,423.50 and 299.76
Similar ratio
Find fourth proportional to 1,422, 2,133 and 448.13
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.