Home / 361.54-542-307.05

Finding the Fourth Proportional to 361.54, 542 and 307.05

Calculator

Solution

The fourth proportional to 361.54, 542 and 307.05 is: 460.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.54 : 542 = 307.05 : x
  2. Step 2: Convert to fraction form
    361.54/542 = 307.05/x
  3. Step 3: Cross multiply
    361.54x = 542 × 307.05
  4. Step 4: Simplify right side
    361.54x = 166,421.10
  5. Step 5: Solve for x
    x = 166,421.10/361.54
  6. Step 6: Final answer
    x = 460.31

Related Problems

Find fourth proportional to 180.77, 271 and 153.53
Half scale
Find fourth proportional to 723.08, 1,084 and 614.10
Double scale
Find fourth proportional to 362.54, 543.50 and 308.05
Similar ratio
Find fourth proportional to 542.31, 813 and 460.58
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.