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Finding the Fourth Proportional to 270.40, 405.99 and 167.37

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Solution

The fourth proportional to 270.40, 405.99 and 167.37 is: 251.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.40 : 405.99 = 167.37 : x
  2. Step 2: Convert to fraction form
    270.40/405.99 = 167.37/x
  3. Step 3: Cross multiply
    270.40x = 405.99 × 167.37
  4. Step 4: Simplify right side
    270.40x = 67,948.55
  5. Step 5: Solve for x
    x = 67,948.55/270.40
  6. Step 6: Final answer
    x = 251.29

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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.