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Finding the Third Proportional to 149.66 and 228.45

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Solution

The third proportional to 149.66 and 228.45 is: 348.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.66 : 228.45 = 228.45 : x
  2. Step 2: Convert to fraction form
    149.66/228.45 = 228.45/x
  3. Step 3: Cross multiply
    149.66x = 228.45 × 228.45
  4. Step 4: Simplify right side
    149.66x = 52,187.26
  5. Step 5: Solve for x
    x = 52,187.26/149.66
  6. Step 6: Final answer
    x = 348.71

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.