Home / 393-589.58-165

Finding the Fourth Proportional to 393, 589.58 and 165

Calculator

Solution

The fourth proportional to 393, 589.58 and 165 is: 247.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    393 : 589.58 = 165 : x
  2. Step 2: Convert to fraction form
    393/589.58 = 165/x
  3. Step 3: Cross multiply
    393x = 589.58 × 165
  4. Step 4: Simplify right side
    393x = 97,280.70
  5. Step 5: Solve for x
    x = 97,280.70/393
  6. Step 6: Final answer
    x = 247.53

Related Problems

Find fourth proportional to 196.50, 294.79 and 82.50
Half scale
Find fourth proportional to 786, 1,179.16 and 330
Double scale
Find fourth proportional to 394, 591.08 and 166
Similar ratio
Find fourth proportional to 589.50, 884.37 and 247.50
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.