Home / 559.85-839.50-328.82

Finding the Fourth Proportional to 559.85, 839.50 and 328.82

Calculator

Solution

The fourth proportional to 559.85, 839.50 and 328.82 is: 493.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.85 : 839.50 = 328.82 : x
  2. Step 2: Convert to fraction form
    559.85/839.50 = 328.82/x
  3. Step 3: Cross multiply
    559.85x = 839.50 × 328.82
  4. Step 4: Simplify right side
    559.85x = 276,039.37
  5. Step 5: Solve for x
    x = 276,039.37/559.85
  6. Step 6: Final answer
    x = 493.06

Related Problems

Find fourth proportional to 279.92, 419.75 and 164.41
Half scale
Find fourth proportional to 1,119.69, 1,679.00 and 657.63
Double scale
Find fourth proportional to 560.85, 841 and 329.82
Similar ratio
Find fourth proportional to 839.77, 1,259.25 and 493.22
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.