Home / 626-939.72-284

Finding the Fourth Proportional to 626, 939.72 and 284

Calculator

Solution

The fourth proportional to 626, 939.72 and 284 is: 426.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    626 : 939.72 = 284 : x
  2. Step 2: Convert to fraction form
    626/939.72 = 284/x
  3. Step 3: Cross multiply
    626x = 939.72 × 284
  4. Step 4: Simplify right side
    626x = 266,880.48
  5. Step 5: Solve for x
    x = 266,880.48/626
  6. Step 6: Final answer
    x = 426.33

Related Problems

Find fourth proportional to 313, 469.86 and 142
Half scale
Find fourth proportional to 1,252, 1,879.44 and 568
Double scale
Find fourth proportional to 627, 941.22 and 285
Similar ratio
Find fourth proportional to 939, 1,409.58 and 426
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.