Home / 952.50-1,428.93-439.50

Finding the Fourth Proportional to 952.50, 1,428.93 and 439.50

Calculator

Solution

The fourth proportional to 952.50, 1,428.93 and 439.50 is: 659.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.50 : 1,428.93 = 439.50 : x
  2. Step 2: Convert to fraction form
    952.50/1,428.93 = 439.50/x
  3. Step 3: Cross multiply
    952.50x = 1,428.93 × 439.50
  4. Step 4: Simplify right side
    952.50x = 628,014.74
  5. Step 5: Solve for x
    x = 628,014.74/952.50
  6. Step 6: Final answer
    x = 659.33

Related Problems

Find fourth proportional to 476.25, 714.47 and 219.75
Half scale
Find fourth proportional to 1,905, 2,857.86 and 879
Double scale
Find fourth proportional to 953.50, 1,430.43 and 440.50
Similar ratio
Find fourth proportional to 1,428.75, 2,143.40 and 659.25
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.