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Finding the Fourth Proportional to 300.63, 415.02 and 217.93

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Solution

The fourth proportional to 300.63, 415.02 and 217.93 is: 300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.63 : 415.02 = 217.93 : x
  2. Step 2: Convert to fraction form
    300.63/415.02 = 217.93/x
  3. Step 3: Cross multiply
    300.63x = 415.02 × 217.93
  4. Step 4: Simplify right side
    300.63x = 90,445.31
  5. Step 5: Solve for x
    x = 90,445.31/300.63
  6. Step 6: Final answer
    x = 300.85

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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.