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Finding the Fourth Proportional to 361.96, 538.91 and 357.64

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Solution

The fourth proportional to 361.96, 538.91 and 357.64 is: 532.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.96 : 538.91 = 357.64 : x
  2. Step 2: Convert to fraction form
    361.96/538.91 = 357.64/x
  3. Step 3: Cross multiply
    361.96x = 538.91 × 357.64
  4. Step 4: Simplify right side
    361.96x = 192,735.77
  5. Step 5: Solve for x
    x = 192,735.77/361.96
  6. Step 6: Final answer
    x = 532.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.