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Finding the Fourth Proportional to 334.32, 461.32 and 311.10

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Solution

The fourth proportional to 334.32, 461.32 and 311.10 is: 429.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.32 : 461.32 = 311.10 : x
  2. Step 2: Convert to fraction form
    334.32/461.32 = 311.10/x
  3. Step 3: Cross multiply
    334.32x = 461.32 × 311.10
  4. Step 4: Simplify right side
    334.32x = 143,516.65
  5. Step 5: Solve for x
    x = 143,516.65/334.32
  6. Step 6: Final answer
    x = 429.28

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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.