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Finding the Fourth Proportional to 354.14, 488.43 and 229.59

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Solution

The fourth proportional to 354.14, 488.43 and 229.59 is: 316.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.14 : 488.43 = 229.59 : x
  2. Step 2: Convert to fraction form
    354.14/488.43 = 229.59/x
  3. Step 3: Cross multiply
    354.14x = 488.43 × 229.59
  4. Step 4: Simplify right side
    354.14x = 112,138.64
  5. Step 5: Solve for x
    x = 112,138.64/354.14
  6. Step 6: Final answer
    x = 316.65

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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.