Home / 1,519.45-2,279.27-479.51

Finding the Fourth Proportional to 1,519.45, 2,279.27 and 479.51

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Solution

The fourth proportional to 1,519.45, 2,279.27 and 479.51 is: 719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,519.45 : 2,279.27 = 479.51 : x
  2. Step 2: Convert to fraction form
    1,519.45/2,279.27 = 479.51/x
  3. Step 3: Cross multiply
    1,519.45x = 2,279.27 × 479.51
  4. Step 4: Simplify right side
    1,519.45x = 1,092,932.76
  5. Step 5: Solve for x
    x = 1,092,932.76/1,519.45
  6. Step 6: Final answer
    x = 719.29

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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.