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Finding the Fourth Proportional to 339.18, 467.67 and 276.87

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Solution

The fourth proportional to 339.18, 467.67 and 276.87 is: 381.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    339.18 : 467.67 = 276.87 : x
  2. Step 2: Convert to fraction form
    339.18/467.67 = 276.87/x
  3. Step 3: Cross multiply
    339.18x = 467.67 × 276.87
  4. Step 4: Simplify right side
    339.18x = 129,483.79
  5. Step 5: Solve for x
    x = 129,483.79/339.18
  6. Step 6: Final answer
    x = 381.76

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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.