Home / 1,519.09-2,278.30-478.96

Finding the Fourth Proportional to 1,519.09, 2,278.30 and 478.96

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Solution

The fourth proportional to 1,519.09, 2,278.30 and 478.96 is: 718.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.09 : 2,278.30 = 478.96 : x
  2. Step 2: Convert to fraction form
    1,519.09/2,278.30 = 478.96/x
  3. Step 3: Cross multiply
    1,519.09x = 2,278.30 × 478.96
  4. Step 4: Simplify right side
    1,519.09x = 1,091,214.57
  5. Step 5: Solve for x
    x = 1,091,214.57/1,519.09
  6. Step 6: Final answer
    x = 718.33

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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.