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Finding the Fourth Proportional to 323.79, 446.93 and 218.80

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Solution

The fourth proportional to 323.79, 446.93 and 218.80 is: 302.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    323.79 : 446.93 = 218.80 : x
  2. Step 2: Convert to fraction form
    323.79/446.93 = 218.80/x
  3. Step 3: Cross multiply
    323.79x = 446.93 × 218.80
  4. Step 4: Simplify right side
    323.79x = 97,788.28
  5. Step 5: Solve for x
    x = 97,788.28/323.79
  6. Step 6: Final answer
    x = 302.01

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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.