Home / 661.32-992-507.48

Finding the Fourth Proportional to 661.32, 992 and 507.48

Calculator

Solution

The fourth proportional to 661.32, 992 and 507.48 is: 761.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.32 : 992 = 507.48 : x
  2. Step 2: Convert to fraction form
    661.32/992 = 507.48/x
  3. Step 3: Cross multiply
    661.32x = 992 × 507.48
  4. Step 4: Simplify right side
    661.32x = 503,420.16
  5. Step 5: Solve for x
    x = 503,420.16/661.32
  6. Step 6: Final answer
    x = 761.24

Related Problems

Find fourth proportional to 330.66, 496 and 253.74
Half scale
Find fourth proportional to 1,322.64, 1,984 and 1,014.96
Double scale
Find fourth proportional to 662.32, 993.50 and 508.48
Similar ratio
Find fourth proportional to 991.98, 1,488 and 761.22
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.