Home / 458.64-688.50-382.50

Finding the Fourth Proportional to 458.64, 688.50 and 382.50

Calculator

Solution

The fourth proportional to 458.64, 688.50 and 382.50 is: 574.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.64 : 688.50 = 382.50 : x
  2. Step 2: Convert to fraction form
    458.64/688.50 = 382.50/x
  3. Step 3: Cross multiply
    458.64x = 688.50 × 382.50
  4. Step 4: Simplify right side
    458.64x = 263,351.25
  5. Step 5: Solve for x
    x = 263,351.25/458.64
  6. Step 6: Final answer
    x = 574.20

Related Problems

Find fourth proportional to 229.32, 344.25 and 191.25
Half scale
Find fourth proportional to 917.28, 1,377 and 765
Double scale
Find fourth proportional to 459.64, 690 and 383.50
Similar ratio
Find fourth proportional to 687.96, 1,032.75 and 573.75
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.