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Finding the Fourth Proportional to 180.37, 270.72 and 99.38

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Solution

The fourth proportional to 180.37, 270.72 and 99.38 is: 149.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.37 : 270.72 = 99.38 : x
  2. Step 2: Convert to fraction form
    180.37/270.72 = 99.38/x
  3. Step 3: Cross multiply
    180.37x = 270.72 × 99.38
  4. Step 4: Simplify right side
    180.37x = 26,904.15
  5. Step 5: Solve for x
    x = 26,904.15/180.37
  6. Step 6: Final answer
    x = 149.17

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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.