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Finding the Fourth Proportional to 255.59, 383.36 and 178.32

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Solution

The fourth proportional to 255.59, 383.36 and 178.32 is: 267.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.59 : 383.36 = 178.32 : x
  2. Step 2: Convert to fraction form
    255.59/383.36 = 178.32/x
  3. Step 3: Cross multiply
    255.59x = 383.36 × 178.32
  4. Step 4: Simplify right side
    255.59x = 68,359.86
  5. Step 5: Solve for x
    x = 68,359.86/255.59
  6. Step 6: Final answer
    x = 267.46

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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.