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Finding the Fourth Proportional to 223.92, 334.18 and 218.16

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Solution

The fourth proportional to 223.92, 334.18 and 218.16 is: 325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.92 : 334.18 = 218.16 : x
  2. Step 2: Convert to fraction form
    223.92/334.18 = 218.16/x
  3. Step 3: Cross multiply
    223.92x = 334.18 × 218.16
  4. Step 4: Simplify right side
    223.92x = 72,904.71
  5. Step 5: Solve for x
    x = 72,904.71/223.92
  6. Step 6: Final answer
    x = 325.58

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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.