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Finding the Fourth Proportional to 455.97, 628.77 and 372.81

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Solution

The fourth proportional to 455.97, 628.77 and 372.81 is: 514.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.97 : 628.77 = 372.81 : x
  2. Step 2: Convert to fraction form
    455.97/628.77 = 372.81/x
  3. Step 3: Cross multiply
    455.97x = 628.77 × 372.81
  4. Step 4: Simplify right side
    455.97x = 234,408.60
  5. Step 5: Solve for x
    x = 234,408.60/455.97
  6. Step 6: Final answer
    x = 514.09

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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.