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Finding the Fourth Proportional to 253.74, 381.06 and 167.25

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Solution

The fourth proportional to 253.74, 381.06 and 167.25 is: 251.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    253.74 : 381.06 = 167.25 : x
  2. Step 2: Convert to fraction form
    253.74/381.06 = 167.25/x
  3. Step 3: Cross multiply
    253.74x = 381.06 × 167.25
  4. Step 4: Simplify right side
    253.74x = 63,732.29
  5. Step 5: Solve for x
    x = 63,732.29/253.74
  6. Step 6: Final answer
    x = 251.17

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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.