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Finding the Fourth Proportional to 365.61, 547.41 and 255.60

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Solution

The fourth proportional to 365.61, 547.41 and 255.60 is: 382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    365.61 : 547.41 = 255.60 : x
  2. Step 2: Convert to fraction form
    365.61/547.41 = 255.60/x
  3. Step 3: Cross multiply
    365.61x = 547.41 × 255.60
  4. Step 4: Simplify right side
    365.61x = 139,918.00
  5. Step 5: Solve for x
    x = 139,918.00/365.61
  6. Step 6: Final answer
    x = 382.70

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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.