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Finding the Fourth Proportional to 672.30, 927.65 and 423.96

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Solution

The fourth proportional to 672.30, 927.65 and 423.96 is: 584.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.30 : 927.65 = 423.96 : x
  2. Step 2: Convert to fraction form
    672.30/927.65 = 423.96/x
  3. Step 3: Cross multiply
    672.30x = 927.65 × 423.96
  4. Step 4: Simplify right side
    672.30x = 393,286.68
  5. Step 5: Solve for x
    x = 393,286.68/672.30
  6. Step 6: Final answer
    x = 584.99

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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.