Home / 1,270.50-1,905.77-448.79

Finding the Fourth Proportional to 1,270.50, 1,905.77 and 448.79

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Solution

The fourth proportional to 1,270.50, 1,905.77 and 448.79 is: 673.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.50 : 1,905.77 = 448.79 : x
  2. Step 2: Convert to fraction form
    1,270.50/1,905.77 = 448.79/x
  3. Step 3: Cross multiply
    1,270.50x = 1,905.77 × 448.79
  4. Step 4: Simplify right side
    1,270.50x = 855,290.52
  5. Step 5: Solve for x
    x = 855,290.52/1,270.50
  6. Step 6: Final answer
    x = 673.19

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Double scale
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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.