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Finding the Fourth Proportional to 484.87, 668.58 and 379.77

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Solution

The fourth proportional to 484.87, 668.58 and 379.77 is: 523.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.87 : 668.58 = 379.77 : x
  2. Step 2: Convert to fraction form
    484.87/668.58 = 379.77/x
  3. Step 3: Cross multiply
    484.87x = 668.58 × 379.77
  4. Step 4: Simplify right side
    484.87x = 253,906.63
  5. Step 5: Solve for x
    x = 253,906.63/484.87
  6. Step 6: Final answer
    x = 523.66

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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.