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Finding the Fourth Proportional to 170.56, 234.74 and 135.48

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Solution

The fourth proportional to 170.56, 234.74 and 135.48 is: 186.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.56 : 234.74 = 135.48 : x
  2. Step 2: Convert to fraction form
    170.56/234.74 = 135.48/x
  3. Step 3: Cross multiply
    170.56x = 234.74 × 135.48
  4. Step 4: Simplify right side
    170.56x = 31,802.58
  5. Step 5: Solve for x
    x = 31,802.58/170.56
  6. Step 6: Final answer
    x = 186.46

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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.