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Finding the Fourth Proportional to 483.75, 667.71 and 276.75

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Solution

The fourth proportional to 483.75, 667.71 and 276.75 is: 381.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.75 : 667.71 = 276.75 : x
  2. Step 2: Convert to fraction form
    483.75/667.71 = 276.75/x
  3. Step 3: Cross multiply
    483.75x = 667.71 × 276.75
  4. Step 4: Simplify right side
    483.75x = 184,788.74
  5. Step 5: Solve for x
    x = 184,788.74/483.75
  6. Step 6: Final answer
    x = 381.99

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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.