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Finding the Fourth Proportional to 305.90, 458.85 and 110.85

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Solution

The fourth proportional to 305.90, 458.85 and 110.85 is: 166.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.90 : 458.85 = 110.85 : x
  2. Step 2: Convert to fraction form
    305.90/458.85 = 110.85/x
  3. Step 3: Cross multiply
    305.90x = 458.85 × 110.85
  4. Step 4: Simplify right side
    305.90x = 50,864.66
  5. Step 5: Solve for x
    x = 50,864.66/305.90
  6. Step 6: Final answer
    x = 166.28

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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.