Home / 691-953.58-380.50

Finding the Fourth Proportional to 691, 953.58 and 380.50

Calculator

Solution

The fourth proportional to 691, 953.58 and 380.50 is: 525.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    691 : 953.58 = 380.50 : x
  2. Step 2: Convert to fraction form
    691/953.58 = 380.50/x
  3. Step 3: Cross multiply
    691x = 953.58 × 380.50
  4. Step 4: Simplify right side
    691x = 362,837.19
  5. Step 5: Solve for x
    x = 362,837.19/691
  6. Step 6: Final answer
    x = 525.09

Related Problems

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.