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Finding the Fourth Proportional to 223.02, 308.21 and 179.28

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Solution

The fourth proportional to 223.02, 308.21 and 179.28 is: 247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.02 : 308.21 = 179.28 : x
  2. Step 2: Convert to fraction form
    223.02/308.21 = 179.28/x
  3. Step 3: Cross multiply
    223.02x = 308.21 × 179.28
  4. Step 4: Simplify right side
    223.02x = 55,254.99
  5. Step 5: Solve for x
    x = 55,254.99/223.02
  6. Step 6: Final answer
    x = 247.76

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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.