Home / 1,228.30-1,841.36-448.12

Finding the Fourth Proportional to 1,228.30, 1,841.36 and 448.12

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Solution

The fourth proportional to 1,228.30, 1,841.36 and 448.12 is: 671.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.30 : 1,841.36 = 448.12 : x
  2. Step 2: Convert to fraction form
    1,228.30/1,841.36 = 448.12/x
  3. Step 3: Cross multiply
    1,228.30x = 1,841.36 × 448.12
  4. Step 4: Simplify right side
    1,228.30x = 825,150.24
  5. Step 5: Solve for x
    x = 825,150.24/1,228.30
  6. Step 6: Final answer
    x = 671.78

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1.5x scale

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.