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Finding the Fourth Proportional to 331.75, 498.78 and 310.35

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Solution

The fourth proportional to 331.75, 498.78 and 310.35 is: 466.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    331.75 : 498.78 = 310.35 : x
  2. Step 2: Convert to fraction form
    331.75/498.78 = 310.35/x
  3. Step 3: Cross multiply
    331.75x = 498.78 × 310.35
  4. Step 4: Simplify right side
    331.75x = 154,796.37
  5. Step 5: Solve for x
    x = 154,796.37/331.75
  6. Step 6: Final answer
    x = 466.61

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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.