Home / 1,260.81-1,890.95-480.27

Finding the Fourth Proportional to 1,260.81, 1,890.95 and 480.27

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Solution

The fourth proportional to 1,260.81, 1,890.95 and 480.27 is: 720.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,260.81 : 1,890.95 = 480.27 : x
  2. Step 2: Convert to fraction form
    1,260.81/1,890.95 = 480.27/x
  3. Step 3: Cross multiply
    1,260.81x = 1,890.95 × 480.27
  4. Step 4: Simplify right side
    1,260.81x = 908,167.76
  5. Step 5: Solve for x
    x = 908,167.76/1,260.81
  6. Step 6: Final answer
    x = 720.31

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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.