Home / 451-672.40-423.46

Finding the Fourth Proportional to 451, 672.40 and 423.46

Calculator

Solution

The fourth proportional to 451, 672.40 and 423.46 is: 631.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    451 : 672.40 = 423.46 : x
  2. Step 2: Convert to fraction form
    451/672.40 = 423.46/x
  3. Step 3: Cross multiply
    451x = 672.40 × 423.46
  4. Step 4: Simplify right side
    451x = 284,734.50
  5. Step 5: Solve for x
    x = 284,734.50/451
  6. Step 6: Final answer
    x = 631.34

Related Problems

Find fourth proportional to 225.50, 336.20 and 211.73
Half scale
Find fourth proportional to 902, 1,344.80 and 846.92
Double scale
Find fourth proportional to 452, 673.89 and 424.46
Similar ratio
Find fourth proportional to 676.50, 1,008.60 and 635.19
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.