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Finding the Fourth Proportional to 366.34, 505.59 and 218.97

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Solution

The fourth proportional to 366.34, 505.59 and 218.97 is: 302.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    366.34 : 505.59 = 218.97 : x
  2. Step 2: Convert to fraction form
    366.34/505.59 = 218.97/x
  3. Step 3: Cross multiply
    366.34x = 505.59 × 218.97
  4. Step 4: Simplify right side
    366.34x = 110,709.45
  5. Step 5: Solve for x
    x = 110,709.45/366.34
  6. Step 6: Final answer
    x = 302.20

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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.