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Finding the Fourth Proportional to 484.91, 668.87 and 422.88

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Solution

The fourth proportional to 484.91, 668.87 and 422.88 is: 583.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.91 : 668.87 = 422.88 : x
  2. Step 2: Convert to fraction form
    484.91/668.87 = 422.88/x
  3. Step 3: Cross multiply
    484.91x = 668.87 × 422.88
  4. Step 4: Simplify right side
    484.91x = 282,849.63
  5. Step 5: Solve for x
    x = 282,849.63/484.91
  6. Step 6: Final answer
    x = 583.31

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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.