Home / 1,215.97-1,823.53-394.03

Finding the Fourth Proportional to 1,215.97, 1,823.53 and 394.03

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Solution

The fourth proportional to 1,215.97, 1,823.53 and 394.03 is: 590.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.97 : 1,823.53 = 394.03 : x
  2. Step 2: Convert to fraction form
    1,215.97/1,823.53 = 394.03/x
  3. Step 3: Cross multiply
    1,215.97x = 1,823.53 × 394.03
  4. Step 4: Simplify right side
    1,215.97x = 718,525.53
  5. Step 5: Solve for x
    x = 718,525.53/1,215.97
  6. Step 6: Final answer
    x = 590.91

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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.