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Finding the Fourth Proportional to 455.36, 628.16 and 268.82

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Solution

The fourth proportional to 455.36, 628.16 and 268.82 is: 370.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.36 : 628.16 = 268.82 : x
  2. Step 2: Convert to fraction form
    455.36/628.16 = 268.82/x
  3. Step 3: Cross multiply
    455.36x = 628.16 × 268.82
  4. Step 4: Simplify right side
    455.36x = 168,861.97
  5. Step 5: Solve for x
    x = 168,861.97/455.36
  6. Step 6: Final answer
    x = 370.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.