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Finding the Fourth Proportional to 675.62, 931.89 and 426.73

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Solution

The fourth proportional to 675.62, 931.89 and 426.73 is: 588.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.62 : 931.89 = 426.73 : x
  2. Step 2: Convert to fraction form
    675.62/931.89 = 426.73/x
  3. Step 3: Cross multiply
    675.62x = 931.89 × 426.73
  4. Step 4: Simplify right side
    675.62x = 397,665.42
  5. Step 5: Solve for x
    x = 397,665.42/675.62
  6. Step 6: Final answer
    x = 588.59

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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.