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Finding the Fourth Proportional to 312.08, 466.92 and 203.60

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Solution

The fourth proportional to 312.08, 466.92 and 203.60 is: 304.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.08 : 466.92 = 203.60 : x
  2. Step 2: Convert to fraction form
    312.08/466.92 = 203.60/x
  3. Step 3: Cross multiply
    312.08x = 466.92 × 203.60
  4. Step 4: Simplify right side
    312.08x = 95,064.91
  5. Step 5: Solve for x
    x = 95,064.91/312.08
  6. Step 6: Final answer
    x = 304.62

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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.