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Finding the Fourth Proportional to 310.36, 428.30 and 179.37

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Solution

The fourth proportional to 310.36, 428.30 and 179.37 is: 247.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.36 : 428.30 = 179.37 : x
  2. Step 2: Convert to fraction form
    310.36/428.30 = 179.37/x
  3. Step 3: Cross multiply
    310.36x = 428.30 × 179.37
  4. Step 4: Simplify right side
    310.36x = 76,822.24
  5. Step 5: Solve for x
    x = 76,822.24/310.36
  6. Step 6: Final answer
    x = 247.53

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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.