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Finding the Fourth Proportional to 311, 466.60 and 157.04

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Solution

The fourth proportional to 311, 466.60 and 157.04 is: 235.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    311 : 466.60 = 157.04 : x
  2. Step 2: Convert to fraction form
    311/466.60 = 157.04/x
  3. Step 3: Cross multiply
    311x = 466.60 × 157.04
  4. Step 4: Simplify right side
    311x = 73,274.86
  5. Step 5: Solve for x
    x = 73,274.86/311
  6. Step 6: Final answer
    x = 235.61

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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.