Home / 477-715.50-135

Finding the Fourth Proportional to 477, 715.50 and 135

Calculator

Solution

The fourth proportional to 477, 715.50 and 135 is: 202.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    477 : 715.50 = 135 : x
  2. Step 2: Convert to fraction form
    477/715.50 = 135/x
  3. Step 3: Cross multiply
    477x = 715.50 × 135
  4. Step 4: Simplify right side
    477x = 96,592.50
  5. Step 5: Solve for x
    x = 96,592.50/477
  6. Step 6: Final answer
    x = 202.50

Related Problems

Find fourth proportional to 238.50, 357.75 and 67.50
Half scale
Find fourth proportional to 954, 1,431 and 270
Double scale
Find fourth proportional to 478, 717 and 136
Similar ratio
Find fourth proportional to 715.50, 1,073.25 and 202.50
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.