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Finding the Fourth Proportional to 365.12, 548.16 and 149.12

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Solution

The fourth proportional to 365.12, 548.16 and 149.12 is: 223.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.12 : 548.16 = 149.12 : x
  2. Step 2: Convert to fraction form
    365.12/548.16 = 149.12/x
  3. Step 3: Cross multiply
    365.12x = 548.16 × 149.12
  4. Step 4: Simplify right side
    365.12x = 81,741.62
  5. Step 5: Solve for x
    x = 81,741.62/365.12
  6. Step 6: Final answer
    x = 223.88

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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.