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Finding the Fourth Proportional to 361.62, 539.58 and 339.58

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Solution

The fourth proportional to 361.62, 539.58 and 339.58 is: 506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.62 : 539.58 = 339.58 : x
  2. Step 2: Convert to fraction form
    361.62/539.58 = 339.58/x
  3. Step 3: Cross multiply
    361.62x = 539.58 × 339.58
  4. Step 4: Simplify right side
    361.62x = 183,229.49
  5. Step 5: Solve for x
    x = 183,229.49/361.62
  6. Step 6: Final answer
    x = 506.69

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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.