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Finding the Fourth Proportional to 365.20, 504.58 and 361.55

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Solution

The fourth proportional to 365.20, 504.58 and 361.55 is: 499.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.20 : 504.58 = 361.55 : x
  2. Step 2: Convert to fraction form
    365.20/504.58 = 361.55/x
  3. Step 3: Cross multiply
    365.20x = 504.58 × 361.55
  4. Step 4: Simplify right side
    365.20x = 182,429.10
  5. Step 5: Solve for x
    x = 182,429.10/365.20
  6. Step 6: Final answer
    x = 499.54

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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.