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Finding the Fourth Proportional to 170.24, 234.56 and 158.09

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Solution

The fourth proportional to 170.24, 234.56 and 158.09 is: 217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.24 : 234.56 = 158.09 : x
  2. Step 2: Convert to fraction form
    170.24/234.56 = 158.09/x
  3. Step 3: Cross multiply
    170.24x = 234.56 × 158.09
  4. Step 4: Simplify right side
    170.24x = 37,080.81
  5. Step 5: Solve for x
    x = 37,080.81/170.24
  6. Step 6: Final answer
    x = 217.82

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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.