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Finding the Fourth Proportional to 339.46, 467.74 and 228.75

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Solution

The fourth proportional to 339.46, 467.74 and 228.75 is: 315.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.46 : 467.74 = 228.75 : x
  2. Step 2: Convert to fraction form
    339.46/467.74 = 228.75/x
  3. Step 3: Cross multiply
    339.46x = 467.74 × 228.75
  4. Step 4: Simplify right side
    339.46x = 106,992.77
  5. Step 5: Solve for x
    x = 106,992.77/339.46
  6. Step 6: Final answer
    x = 315.18

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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.