Home / 1,025.35-1,538.18-331.89

Finding the Fourth Proportional to 1,025.35, 1,538.18 and 331.89

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Solution

The fourth proportional to 1,025.35, 1,538.18 and 331.89 is: 497.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,025.35 : 1,538.18 = 331.89 : x
  2. Step 2: Convert to fraction form
    1,025.35/1,538.18 = 331.89/x
  3. Step 3: Cross multiply
    1,025.35x = 1,538.18 × 331.89
  4. Step 4: Simplify right side
    1,025.35x = 510,497.21
  5. Step 5: Solve for x
    x = 510,497.21/1,025.35
  6. Step 6: Final answer
    x = 497.88

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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.