Home / 1,270.25-1,905.51-448.75

Finding the Fourth Proportional to 1,270.25, 1,905.51 and 448.75

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Solution

The fourth proportional to 1,270.25, 1,905.51 and 448.75 is: 673.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.25 : 1,905.51 = 448.75 : x
  2. Step 2: Convert to fraction form
    1,270.25/1,905.51 = 448.75/x
  3. Step 3: Cross multiply
    1,270.25x = 1,905.51 × 448.75
  4. Step 4: Simplify right side
    1,270.25x = 855,088.08
  5. Step 5: Solve for x
    x = 855,088.08/1,270.25
  6. Step 6: Final answer
    x = 673.17

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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.