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Finding the Fourth Proportional to 229.12, 316.22 and 162.70

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Solution

The fourth proportional to 229.12, 316.22 and 162.70 is: 224.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.12 : 316.22 = 162.70 : x
  2. Step 2: Convert to fraction form
    229.12/316.22 = 162.70/x
  3. Step 3: Cross multiply
    229.12x = 316.22 × 162.70
  4. Step 4: Simplify right side
    229.12x = 51,447.39
  5. Step 5: Solve for x
    x = 51,447.39/229.12
  6. Step 6: Final answer
    x = 224.55

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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.