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Finding the Fourth Proportional to 243.30, 365.07 and 162.12

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Solution

The fourth proportional to 243.30, 365.07 and 162.12 is: 243.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.30 : 365.07 = 162.12 : x
  2. Step 2: Convert to fraction form
    243.30/365.07 = 162.12/x
  3. Step 3: Cross multiply
    243.30x = 365.07 × 162.12
  4. Step 4: Simplify right side
    243.30x = 59,185.15
  5. Step 5: Solve for x
    x = 59,185.15/243.30
  6. Step 6: Final answer
    x = 243.26

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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.