Home / 497.28-747.40-336

Finding the Fourth Proportional to 497.28, 747.40 and 336

Calculator

Solution

The fourth proportional to 497.28, 747.40 and 336 is: 505

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.28 : 747.40 = 336 : x
  2. Step 2: Convert to fraction form
    497.28/747.40 = 336/x
  3. Step 3: Cross multiply
    497.28x = 747.40 × 336
  4. Step 4: Simplify right side
    497.28x = 251,126.40
  5. Step 5: Solve for x
    x = 251,126.40/497.28
  6. Step 6: Final answer
    x = 505

Related Problems

Find fourth proportional to 248.64, 373.70 and 168
Half scale
Find fourth proportional to 994.56, 1,494.80 and 672
Double scale
Find fourth proportional to 498.28, 748.90 and 337
Similar ratio
Find fourth proportional to 745.92, 1,121.10 and 504
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.