Home / 553-829.74-211

Finding the Fourth Proportional to 553, 829.74 and 211

Calculator

Solution

The fourth proportional to 553, 829.74 and 211 is: 316.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    553 : 829.74 = 211 : x
  2. Step 2: Convert to fraction form
    553/829.74 = 211/x
  3. Step 3: Cross multiply
    553x = 829.74 × 211
  4. Step 4: Simplify right side
    553x = 175,075.14
  5. Step 5: Solve for x
    x = 175,075.14/553
  6. Step 6: Final answer
    x = 316.59

Related Problems

Find fourth proportional to 276.50, 414.87 and 105.50
Half scale
Find fourth proportional to 1,106, 1,659.48 and 422
Double scale
Find fourth proportional to 554, 831.24 and 212
Similar ratio
Find fourth proportional to 829.50, 1,244.61 and 316.50
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.