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Finding the Fourth Proportional to 455.58, 682.31 and 223.75

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Solution

The fourth proportional to 455.58, 682.31 and 223.75 is: 335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.58 : 682.31 = 223.75 : x
  2. Step 2: Convert to fraction form
    455.58/682.31 = 223.75/x
  3. Step 3: Cross multiply
    455.58x = 682.31 × 223.75
  4. Step 4: Simplify right side
    455.58x = 152,668.27
  5. Step 5: Solve for x
    x = 152,668.27/455.58
  6. Step 6: Final answer
    x = 335.11

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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.