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Finding the Fourth Proportional to 174.39, 261.27 and 144.15

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Solution

The fourth proportional to 174.39, 261.27 and 144.15 is: 215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.39 : 261.27 = 144.15 : x
  2. Step 2: Convert to fraction form
    174.39/261.27 = 144.15/x
  3. Step 3: Cross multiply
    174.39x = 261.27 × 144.15
  4. Step 4: Simplify right side
    174.39x = 37,662.07
  5. Step 5: Solve for x
    x = 37,662.07/174.39
  6. Step 6: Final answer
    x = 215.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.