Home / 332.29-458.22-312.70

Finding the Fourth Proportional to 332.29, 458.22 and 312.70

Calculator

Solution

The fourth proportional to 332.29, 458.22 and 312.70 is: 431.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.29 : 458.22 = 312.70 : x
  2. Step 2: Convert to fraction form
    332.29/458.22 = 312.70/x
  3. Step 3: Cross multiply
    332.29x = 458.22 × 312.70
  4. Step 4: Simplify right side
    332.29x = 143,285.39
  5. Step 5: Solve for x
    x = 143,285.39/332.29
  6. Step 6: Final answer
    x = 431.21

Related Problems

Find fourth proportional to 166.15, 229.11 and 156.35
Half scale
Find fourth proportional to 664.58, 916.44 and 625.40
Double scale
Find fourth proportional to 333.29, 459.60 and 313.70
Similar ratio
Find fourth proportional to 498.44, 687.33 and 469.05
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.