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Finding the Fourth Proportional to 310.41, 465.09 and 218.94

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Solution

The fourth proportional to 310.41, 465.09 and 218.94 is: 328.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.41 : 465.09 = 218.94 : x
  2. Step 2: Convert to fraction form
    310.41/465.09 = 218.94/x
  3. Step 3: Cross multiply
    310.41x = 465.09 × 218.94
  4. Step 4: Simplify right side
    310.41x = 101,826.80
  5. Step 5: Solve for x
    x = 101,826.80/310.41
  6. Step 6: Final answer
    x = 328.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.