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Finding the Fourth Proportional to 327.02, 451.15 and 285.57

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Solution

The fourth proportional to 327.02, 451.15 and 285.57 is: 393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.02 : 451.15 = 285.57 : x
  2. Step 2: Convert to fraction form
    327.02/451.15 = 285.57/x
  3. Step 3: Cross multiply
    327.02x = 451.15 × 285.57
  4. Step 4: Simplify right side
    327.02x = 128,834.19
  5. Step 5: Solve for x
    x = 128,834.19/327.02
  6. Step 6: Final answer
    x = 393.97

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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.