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Finding the Fourth Proportional to 361.36, 539.44 and 306.70

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Solution

The fourth proportional to 361.36, 539.44 and 306.70 is: 457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    361.36 : 539.44 = 306.70 : x
  2. Step 2: Convert to fraction form
    361.36/539.44 = 306.70/x
  3. Step 3: Cross multiply
    361.36x = 539.44 × 306.70
  4. Step 4: Simplify right side
    361.36x = 165,446.25
  5. Step 5: Solve for x
    x = 165,446.25/361.36
  6. Step 6: Final answer
    x = 457.84

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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.