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Finding the Fourth Proportional to 659.14, 989.31 and 334.73

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Solution

The fourth proportional to 659.14, 989.31 and 334.73 is: 502.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.14 : 989.31 = 334.73 : x
  2. Step 2: Convert to fraction form
    659.14/989.31 = 334.73/x
  3. Step 3: Cross multiply
    659.14x = 989.31 × 334.73
  4. Step 4: Simplify right side
    659.14x = 331,151.74
  5. Step 5: Solve for x
    x = 331,151.74/659.14
  6. Step 6: Final answer
    x = 502.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.