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Finding the Fourth Proportional to 354.03, 488.05 and 229.69

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Solution

The fourth proportional to 354.03, 488.05 and 229.69 is: 316.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.03 : 488.05 = 229.69 : x
  2. Step 2: Convert to fraction form
    354.03/488.05 = 229.69/x
  3. Step 3: Cross multiply
    354.03x = 488.05 × 229.69
  4. Step 4: Simplify right side
    354.03x = 112,100.20
  5. Step 5: Solve for x
    x = 112,100.20/354.03
  6. Step 6: Final answer
    x = 316.64

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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.