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Finding the Fourth Proportional to 613.14, 917.42 and 365.44

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Solution

The fourth proportional to 613.14, 917.42 and 365.44 is: 546.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.14 : 917.42 = 365.44 : x
  2. Step 2: Convert to fraction form
    613.14/917.42 = 365.44/x
  3. Step 3: Cross multiply
    613.14x = 917.42 × 365.44
  4. Step 4: Simplify right side
    613.14x = 335,261.96
  5. Step 5: Solve for x
    x = 335,261.96/613.14
  6. Step 6: Final answer
    x = 546.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.