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Finding the Fourth Proportional to 174.60, 261 and 170.28

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Solution

The fourth proportional to 174.60, 261 and 170.28 is: 254.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.60 : 261 = 170.28 : x
  2. Step 2: Convert to fraction form
    174.60/261 = 170.28/x
  3. Step 3: Cross multiply
    174.60x = 261 × 170.28
  4. Step 4: Simplify right side
    174.60x = 44,443.08
  5. Step 5: Solve for x
    x = 44,443.08/174.60
  6. Step 6: Final answer
    x = 254.54

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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.