Home / 965.65-1,331.36-633.50

Finding the Fourth Proportional to 965.65, 1,331.36 and 633.50

Calculator

Solution

The fourth proportional to 965.65, 1,331.36 and 633.50 is: 873.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    965.65 : 1,331.36 = 633.50 : x
  2. Step 2: Convert to fraction form
    965.65/1,331.36 = 633.50/x
  3. Step 3: Cross multiply
    965.65x = 1,331.36 × 633.50
  4. Step 4: Simplify right side
    965.65x = 843,416.56
  5. Step 5: Solve for x
    x = 843,416.56/965.65
  6. Step 6: Final answer
    x = 873.42

Related Problems

Find fourth proportional to 482.83, 665.68 and 316.75
Half scale
Find fourth proportional to 1,931.30, 2,662.72 and 1,267
Double scale
Find fourth proportional to 966.65, 1,332.74 and 634.50
Similar ratio
Find fourth proportional to 1,448.48, 1,997.04 and 950.25
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.