Home / 346.98-521.55-219.54

Finding the Fourth Proportional to 346.98, 521.55 and 219.54

Calculator

Solution

The fourth proportional to 346.98, 521.55 and 219.54 is: 329.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.98 : 521.55 = 219.54 : x
  2. Step 2: Convert to fraction form
    346.98/521.55 = 219.54/x
  3. Step 3: Cross multiply
    346.98x = 521.55 × 219.54
  4. Step 4: Simplify right side
    346.98x = 114,501.09
  5. Step 5: Solve for x
    x = 114,501.09/346.98
  6. Step 6: Final answer
    x = 329.99

Related Problems

Find fourth proportional to 173.49, 260.78 and 109.77
Half scale
Find fourth proportional to 693.96, 1,043.10 and 439.08
Double scale
Find fourth proportional to 347.98, 523.05 and 220.54
Similar ratio
Find fourth proportional to 520.47, 782.33 and 329.31
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.