Home / 458.54-688-170

Finding the Fourth Proportional to 458.54, 688 and 170

Calculator

Solution

The fourth proportional to 458.54, 688 and 170 is: 255.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.54 : 688 = 170 : x
  2. Step 2: Convert to fraction form
    458.54/688 = 170/x
  3. Step 3: Cross multiply
    458.54x = 688 × 170
  4. Step 4: Simplify right side
    458.54x = 116,960
  5. Step 5: Solve for x
    x = 116,960/458.54
  6. Step 6: Final answer
    x = 255.07

Related Problems

Find fourth proportional to 229.27, 344 and 85
Half scale
Find fourth proportional to 917.08, 1,376 and 340
Double scale
Find fourth proportional to 459.54, 689.50 and 171
Similar ratio
Find fourth proportional to 687.81, 1,032 and 255
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.