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Finding the Fourth Proportional to 455.43, 681.91 and 300.94

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Solution

The fourth proportional to 455.43, 681.91 and 300.94 is: 450.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.43 : 681.91 = 300.94 : x
  2. Step 2: Convert to fraction form
    455.43/681.91 = 300.94/x
  3. Step 3: Cross multiply
    455.43x = 681.91 × 300.94
  4. Step 4: Simplify right side
    455.43x = 205,214.00
  5. Step 5: Solve for x
    x = 205,214.00/455.43
  6. Step 6: Final answer
    x = 450.59

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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.