Home / 358-494.04-220

Finding the Fourth Proportional to 358, 494.04 and 220

Calculator

Solution

The fourth proportional to 358, 494.04 and 220 is: 303.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    358 : 494.04 = 220 : x
  2. Step 2: Convert to fraction form
    358/494.04 = 220/x
  3. Step 3: Cross multiply
    358x = 494.04 × 220
  4. Step 4: Simplify right side
    358x = 108,688.80
  5. Step 5: Solve for x
    x = 108,688.80/358
  6. Step 6: Final answer
    x = 303.60

Related Problems

Find fourth proportional to 179, 247.02 and 110
Half scale
Find fourth proportional to 716, 988.08 and 440
Double scale
Find fourth proportional to 359, 495.42 and 221
Similar ratio
Find fourth proportional to 537, 741.06 and 330
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.