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Finding the Fourth Proportional to 229.89, 344.74 and 83.62

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Solution

The fourth proportional to 229.89, 344.74 and 83.62 is: 125.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.89 : 344.74 = 83.62 : x
  2. Step 2: Convert to fraction form
    229.89/344.74 = 83.62/x
  3. Step 3: Cross multiply
    229.89x = 344.74 × 83.62
  4. Step 4: Simplify right side
    229.89x = 28,827.16
  5. Step 5: Solve for x
    x = 28,827.16/229.89
  6. Step 6: Final answer
    x = 125.40

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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.