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Finding the Fourth Proportional to 301.28, 415.83 and 170.30

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Solution

The fourth proportional to 301.28, 415.83 and 170.30 is: 235.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.28 : 415.83 = 170.30 : x
  2. Step 2: Convert to fraction form
    301.28/415.83 = 170.30/x
  3. Step 3: Cross multiply
    301.28x = 415.83 × 170.30
  4. Step 4: Simplify right side
    301.28x = 70,815.85
  5. Step 5: Solve for x
    x = 70,815.85/301.28
  6. Step 6: Final answer
    x = 235.05

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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.