Home / 550-823.89-458.41

Finding the Fourth Proportional to 550, 823.89 and 458.41

Calculator

Solution

The fourth proportional to 550, 823.89 and 458.41 is: 686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    550 : 823.89 = 458.41 : x
  2. Step 2: Convert to fraction form
    550/823.89 = 458.41/x
  3. Step 3: Cross multiply
    550x = 823.89 × 458.41
  4. Step 4: Simplify right side
    550x = 377,673.00
  5. Step 5: Solve for x
    x = 377,673.00/550
  6. Step 6: Final answer
    x = 686.68

Related Problems

Find fourth proportional to 275, 411.94 and 229.20
Half scale
Find fourth proportional to 1,100, 1,647.77 and 916.81
Double scale
Find fourth proportional to 551, 825.38 and 459.41
Similar ratio
Find fourth proportional to 825, 1,235.83 and 687.61
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.