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Finding the Fourth Proportional to 361.90, 499.39 and 214.53

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Solution

The fourth proportional to 361.90, 499.39 and 214.53 is: 296.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.90 : 499.39 = 214.53 : x
  2. Step 2: Convert to fraction form
    361.90/499.39 = 214.53/x
  3. Step 3: Cross multiply
    361.90x = 499.39 × 214.53
  4. Step 4: Simplify right side
    361.90x = 107,134.14
  5. Step 5: Solve for x
    x = 107,134.14/361.90
  6. Step 6: Final answer
    x = 296.03

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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.