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Finding the Fourth Proportional to 334.72, 461.46 and 310.96

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Solution

The fourth proportional to 334.72, 461.46 and 310.96 is: 428.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.72 : 461.46 = 310.96 : x
  2. Step 2: Convert to fraction form
    334.72/461.46 = 310.96/x
  3. Step 3: Cross multiply
    334.72x = 461.46 × 310.96
  4. Step 4: Simplify right side
    334.72x = 143,495.60
  5. Step 5: Solve for x
    x = 143,495.60/334.72
  6. Step 6: Final answer
    x = 428.70

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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.