Home / 1,261.39-1,892.09-336.95

Finding the Fourth Proportional to 1,261.39, 1,892.09 and 336.95

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Solution

The fourth proportional to 1,261.39, 1,892.09 and 336.95 is: 505.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.39 : 1,892.09 = 336.95 : x
  2. Step 2: Convert to fraction form
    1,261.39/1,892.09 = 336.95/x
  3. Step 3: Cross multiply
    1,261.39x = 1,892.09 × 336.95
  4. Step 4: Simplify right side
    1,261.39x = 637,539.73
  5. Step 5: Solve for x
    x = 637,539.73/1,261.39
  6. Step 6: Final answer
    x = 505.43

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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.