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Finding the Fourth Proportional to 170.28, 254.31 and 136.08

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Solution

The fourth proportional to 170.28, 254.31 and 136.08 is: 203.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.28 : 254.31 = 136.08 : x
  2. Step 2: Convert to fraction form
    170.28/254.31 = 136.08/x
  3. Step 3: Cross multiply
    170.28x = 254.31 × 136.08
  4. Step 4: Simplify right side
    170.28x = 34,606.50
  5. Step 5: Solve for x
    x = 34,606.50/170.28
  6. Step 6: Final answer
    x = 203.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.