Home / 1,215.21-1,822.83-484.36

Finding the Fourth Proportional to 1,215.21, 1,822.83 and 484.36

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Solution

The fourth proportional to 1,215.21, 1,822.83 and 484.36 is: 726.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.21 : 1,822.83 = 484.36 : x
  2. Step 2: Convert to fraction form
    1,215.21/1,822.83 = 484.36/x
  3. Step 3: Cross multiply
    1,215.21x = 1,822.83 × 484.36
  4. Step 4: Simplify right side
    1,215.21x = 882,905.94
  5. Step 5: Solve for x
    x = 882,905.94/1,215.21
  6. Step 6: Final answer
    x = 726.55

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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.