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Finding the Fourth Proportional to 365.50, 504.07 and 217.88

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Solution

The fourth proportional to 365.50, 504.07 and 217.88 is: 300.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.50 : 504.07 = 217.88 : x
  2. Step 2: Convert to fraction form
    365.50/504.07 = 217.88/x
  3. Step 3: Cross multiply
    365.50x = 504.07 × 217.88
  4. Step 4: Simplify right side
    365.50x = 109,825.60
  5. Step 5: Solve for x
    x = 109,825.60/365.50
  6. Step 6: Final answer
    x = 300.48

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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.