Home / 469.62-648-295.20

Finding the Fourth Proportional to 469.62, 648 and 295.20

Calculator

Solution

The fourth proportional to 469.62, 648 and 295.20 is: 407.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.62 : 648 = 295.20 : x
  2. Step 2: Convert to fraction form
    469.62/648 = 295.20/x
  3. Step 3: Cross multiply
    469.62x = 648 × 295.20
  4. Step 4: Simplify right side
    469.62x = 191,289.60
  5. Step 5: Solve for x
    x = 191,289.60/469.62
  6. Step 6: Final answer
    x = 407.33

Related Problems

Find fourth proportional to 234.81, 324 and 147.60
Half scale
Find fourth proportional to 939.24, 1,296 and 590.40
Double scale
Find fourth proportional to 470.62, 649.38 and 296.20
Similar ratio
Find fourth proportional to 704.43, 972 and 442.80
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.