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Finding the Fourth Proportional to 462.06, 693.16 and 218.57

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Solution

The fourth proportional to 462.06, 693.16 and 218.57 is: 327.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.06 : 693.16 = 218.57 : x
  2. Step 2: Convert to fraction form
    462.06/693.16 = 218.57/x
  3. Step 3: Cross multiply
    462.06x = 693.16 × 218.57
  4. Step 4: Simplify right side
    462.06x = 151,499.97
  5. Step 5: Solve for x
    x = 151,499.97/462.06
  6. Step 6: Final answer
    x = 327.88

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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.