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Finding the Fourth Proportional to 165.90, 247.37 and 165.67

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Solution

The fourth proportional to 165.90, 247.37 and 165.67 is: 247.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.90 : 247.37 = 165.67 : x
  2. Step 2: Convert to fraction form
    165.90/247.37 = 165.67/x
  3. Step 3: Cross multiply
    165.90x = 247.37 × 165.67
  4. Step 4: Simplify right side
    165.90x = 40,982.20
  5. Step 5: Solve for x
    x = 40,982.20/165.90
  6. Step 6: Final answer
    x = 247.03

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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.