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Finding the Fourth Proportional to 165.48, 227.44 and 148.72

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Solution

The fourth proportional to 165.48, 227.44 and 148.72 is: 204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165.48 : 227.44 = 148.72 : x
  2. Step 2: Convert to fraction form
    165.48/227.44 = 148.72/x
  3. Step 3: Cross multiply
    165.48x = 227.44 × 148.72
  4. Step 4: Simplify right side
    165.48x = 33,824.88
  5. Step 5: Solve for x
    x = 33,824.88/165.48
  6. Step 6: Final answer
    x = 204.40

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.