Home / 1,218.29-1,826.35-448.61

Finding the Fourth Proportional to 1,218.29, 1,826.35 and 448.61

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Solution

The fourth proportional to 1,218.29, 1,826.35 and 448.61 is: 672.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218.29 : 1,826.35 = 448.61 : x
  2. Step 2: Convert to fraction form
    1,218.29/1,826.35 = 448.61/x
  3. Step 3: Cross multiply
    1,218.29x = 1,826.35 × 448.61
  4. Step 4: Simplify right side
    1,218.29x = 819,318.87
  5. Step 5: Solve for x
    x = 819,318.87/1,218.29
  6. Step 6: Final answer
    x = 672.52

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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.