Home / 1,260.60-1,890.89-336.15

Finding the Fourth Proportional to 1,260.60, 1,890.89 and 336.15

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Solution

The fourth proportional to 1,260.60, 1,890.89 and 336.15 is: 504.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.60 : 1,890.89 = 336.15 : x
  2. Step 2: Convert to fraction form
    1,260.60/1,890.89 = 336.15/x
  3. Step 3: Cross multiply
    1,260.60x = 1,890.89 × 336.15
  4. Step 4: Simplify right side
    1,260.60x = 635,622.67
  5. Step 5: Solve for x
    x = 635,622.67/1,260.60
  6. Step 6: Final answer
    x = 504.22

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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.