Home / 284.64-392.41-243.63

Finding the Fourth Proportional to 284.64, 392.41 and 243.63

Calculator

Solution

The fourth proportional to 284.64, 392.41 and 243.63 is: 335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    284.64 : 392.41 = 243.63 : x
  2. Step 2: Convert to fraction form
    284.64/392.41 = 243.63/x
  3. Step 3: Cross multiply
    284.64x = 392.41 × 243.63
  4. Step 4: Simplify right side
    284.64x = 95,602.85
  5. Step 5: Solve for x
    x = 95,602.85/284.64
  6. Step 6: Final answer
    x = 335.87

Related Problems

Find fourth proportional to 142.32, 196.21 and 121.82
Half scale
Find fourth proportional to 569.28, 784.82 and 487.26
Double scale
Find fourth proportional to 285.64, 393.79 and 244.63
Similar ratio
Find fourth proportional to 426.96, 588.62 and 365.45
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.