Home / 1,260.20-1,890.30-335.71

Finding the Fourth Proportional to 1,260.20, 1,890.30 and 335.71

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Solution

The fourth proportional to 1,260.20, 1,890.30 and 335.71 is: 503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.20 : 1,890.30 = 335.71 : x
  2. Step 2: Convert to fraction form
    1,260.20/1,890.30 = 335.71/x
  3. Step 3: Cross multiply
    1,260.20x = 1,890.30 × 335.71
  4. Step 4: Simplify right side
    1,260.20x = 634,581.48
  5. Step 5: Solve for x
    x = 634,581.48/1,260.20
  6. Step 6: Final answer
    x = 503.56

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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.