Home / 893.14-1,339.89-316

Finding the Fourth Proportional to 893.14, 1,339.89 and 316

Calculator

Solution

The fourth proportional to 893.14, 1,339.89 and 316 is: 474.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    893.14 : 1,339.89 = 316 : x
  2. Step 2: Convert to fraction form
    893.14/1,339.89 = 316/x
  3. Step 3: Cross multiply
    893.14x = 1,339.89 × 316
  4. Step 4: Simplify right side
    893.14x = 423,405.24
  5. Step 5: Solve for x
    x = 423,405.24/893.14
  6. Step 6: Final answer
    x = 474.06

Related Problems

Find fourth proportional to 446.57, 669.95 and 158
Half scale
Find fourth proportional to 1,786.28, 2,679.78 and 632
Double scale
Find fourth proportional to 894.14, 1,341.39 and 317
Similar ratio
Find fourth proportional to 1,339.71, 2,009.84 and 474
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.