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Finding the Fourth Proportional to 253.44, 379.71 and 174.14

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Solution

The fourth proportional to 253.44, 379.71 and 174.14 is: 260.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.44 : 379.71 = 174.14 : x
  2. Step 2: Convert to fraction form
    253.44/379.71 = 174.14/x
  3. Step 3: Cross multiply
    253.44x = 379.71 × 174.14
  4. Step 4: Simplify right side
    253.44x = 66,120.80
  5. Step 5: Solve for x
    x = 66,120.80/253.44
  6. Step 6: Final answer
    x = 260.89

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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.