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Finding the Fourth Proportional to 312.57, 467.47 and 234.68

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Solution

The fourth proportional to 312.57, 467.47 and 234.68 is: 350.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.57 : 467.47 = 234.68 : x
  2. Step 2: Convert to fraction form
    312.57/467.47 = 234.68/x
  3. Step 3: Cross multiply
    312.57x = 467.47 × 234.68
  4. Step 4: Simplify right side
    312.57x = 109,705.86
  5. Step 5: Solve for x
    x = 109,705.86/312.57
  6. Step 6: Final answer
    x = 350.98

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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.