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Finding the Fourth Proportional to 264.54, 365.12 and 220.80

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Solution

The fourth proportional to 264.54, 365.12 and 220.80 is: 304.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    264.54 : 365.12 = 220.80 : x
  2. Step 2: Convert to fraction form
    264.54/365.12 = 220.80/x
  3. Step 3: Cross multiply
    264.54x = 365.12 × 220.80
  4. Step 4: Simplify right side
    264.54x = 80,618.50
  5. Step 5: Solve for x
    x = 80,618.50/264.54
  6. Step 6: Final answer
    x = 304.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.