Home / 1,025.50-1,538.40-331.94

Finding the Fourth Proportional to 1,025.50, 1,538.40 and 331.94

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Solution

The fourth proportional to 1,025.50, 1,538.40 and 331.94 is: 497.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.50 : 1,538.40 = 331.94 : x
  2. Step 2: Convert to fraction form
    1,025.50/1,538.40 = 331.94/x
  3. Step 3: Cross multiply
    1,025.50x = 1,538.40 × 331.94
  4. Step 4: Simplify right side
    1,025.50x = 510,648.80
  5. Step 5: Solve for x
    x = 510,648.80/1,025.50
  6. Step 6: Final answer
    x = 497.95

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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.