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Finding the Fourth Proportional to 327.35, 488.11 and 315.51

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Solution

The fourth proportional to 327.35, 488.11 and 315.51 is: 470.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    327.35 : 488.11 = 315.51 : x
  2. Step 2: Convert to fraction form
    327.35/488.11 = 315.51/x
  3. Step 3: Cross multiply
    327.35x = 488.11 × 315.51
  4. Step 4: Simplify right side
    327.35x = 154,003.59
  5. Step 5: Solve for x
    x = 154,003.59/327.35
  6. Step 6: Final answer
    x = 470.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.