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Finding the Fourth Proportional to 255.60, 381.96 and 183.60

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Solution

The fourth proportional to 255.60, 381.96 and 183.60 is: 274.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.60 : 381.96 = 183.60 : x
  2. Step 2: Convert to fraction form
    255.60/381.96 = 183.60/x
  3. Step 3: Cross multiply
    255.60x = 381.96 × 183.60
  4. Step 4: Simplify right side
    255.60x = 70,127.86
  5. Step 5: Solve for x
    x = 70,127.86/255.60
  6. Step 6: Final answer
    x = 274.37

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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.