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Finding the Fourth Proportional to 169.10, 254.71 and 154.34

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Solution

The fourth proportional to 169.10, 254.71 and 154.34 is: 232.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.10 : 254.71 = 154.34 : x
  2. Step 2: Convert to fraction form
    169.10/254.71 = 154.34/x
  3. Step 3: Cross multiply
    169.10x = 254.71 × 154.34
  4. Step 4: Simplify right side
    169.10x = 39,311.17
  5. Step 5: Solve for x
    x = 39,311.17/169.10
  6. Step 6: Final answer
    x = 232.47

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.