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Finding the Fourth Proportional to 382.63, 527.64 and 327.55

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Solution

The fourth proportional to 382.63, 527.64 and 327.55 is: 451.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    382.63 : 527.64 = 327.55 : x
  2. Step 2: Convert to fraction form
    382.63/527.64 = 327.55/x
  3. Step 3: Cross multiply
    382.63x = 527.64 × 327.55
  4. Step 4: Simplify right side
    382.63x = 172,828.48
  5. Step 5: Solve for x
    x = 172,828.48/382.63
  6. Step 6: Final answer
    x = 451.69

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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.