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Finding the Fourth Proportional to 302.87, 454.25 and 107.89

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Solution

The fourth proportional to 302.87, 454.25 and 107.89 is: 161.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.87 : 454.25 = 107.89 : x
  2. Step 2: Convert to fraction form
    302.87/454.25 = 107.89/x
  3. Step 3: Cross multiply
    302.87x = 454.25 × 107.89
  4. Step 4: Simplify right side
    302.87x = 49,008.17
  5. Step 5: Solve for x
    x = 49,008.17/302.87
  6. Step 6: Final answer
    x = 161.81

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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.