Home / 1,215.41-1,822.80-484.58

Finding the Fourth Proportional to 1,215.41, 1,822.80 and 484.58

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Solution

The fourth proportional to 1,215.41, 1,822.80 and 484.58 is: 726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.41 : 1,822.80 = 484.58 : x
  2. Step 2: Convert to fraction form
    1,215.41/1,822.80 = 484.58/x
  3. Step 3: Cross multiply
    1,215.41x = 1,822.80 × 484.58
  4. Step 4: Simplify right side
    1,215.41x = 883,298.80
  5. Step 5: Solve for x
    x = 883,298.80/1,215.41
  6. Step 6: Final answer
    x = 726.75

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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.