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Finding the Fourth Proportional to 243.64, 365.01 and 216.30

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Solution

The fourth proportional to 243.64, 365.01 and 216.30 is: 324.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.64 : 365.01 = 216.30 : x
  2. Step 2: Convert to fraction form
    243.64/365.01 = 216.30/x
  3. Step 3: Cross multiply
    243.64x = 365.01 × 216.30
  4. Step 4: Simplify right side
    243.64x = 78,952.22
  5. Step 5: Solve for x
    x = 78,952.22/243.64
  6. Step 6: Final answer
    x = 324.05

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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.