Home / 762.28-1,052-631.06

Finding the Fourth Proportional to 762.28, 1,052 and 631.06

Calculator

Solution

The fourth proportional to 762.28, 1,052 and 631.06 is: 870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    762.28 : 1,052 = 631.06 : x
  2. Step 2: Convert to fraction form
    762.28/1,052 = 631.06/x
  3. Step 3: Cross multiply
    762.28x = 1,052 × 631.06
  4. Step 4: Simplify right side
    762.28x = 663,875.12
  5. Step 5: Solve for x
    x = 663,875.12/762.28
  6. Step 6: Final answer
    x = 870.91

Related Problems

Find fourth proportional to 381.14, 526 and 315.53
Half scale
Find fourth proportional to 1,524.56, 2,104 and 1,262.12
Double scale
Find fourth proportional to 763.28, 1,053.38 and 632.06
Similar ratio
Find fourth proportional to 1,143.42, 1,578 and 946.59
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.