Home / 1,271.40-1,905.82-448.98

Finding the Fourth Proportional to 1,271.40, 1,905.82 and 448.98

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Solution

The fourth proportional to 1,271.40, 1,905.82 and 448.98 is: 673.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.40 : 1,905.82 = 448.98 : x
  2. Step 2: Convert to fraction form
    1,271.40/1,905.82 = 448.98/x
  3. Step 3: Cross multiply
    1,271.40x = 1,905.82 × 448.98
  4. Step 4: Simplify right side
    1,271.40x = 855,675.06
  5. Step 5: Solve for x
    x = 855,675.06/1,271.40
  6. Step 6: Final answer
    x = 673.02

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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.