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Finding the Fourth Proportional to 229.08, 315.72 and 170.76

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Solution

The fourth proportional to 229.08, 315.72 and 170.76 is: 235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    229.08 : 315.72 = 170.76 : x
  2. Step 2: Convert to fraction form
    229.08/315.72 = 170.76/x
  3. Step 3: Cross multiply
    229.08x = 315.72 × 170.76
  4. Step 4: Simplify right side
    229.08x = 53,912.35
  5. Step 5: Solve for x
    x = 53,912.35/229.08
  6. Step 6: Final answer
    x = 235.34

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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.