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Finding the Fourth Proportional to 256.08, 352.88 and 178.32

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Solution

The fourth proportional to 256.08, 352.88 and 178.32 is: 245.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    256.08 : 352.88 = 178.32 : x
  2. Step 2: Convert to fraction form
    256.08/352.88 = 178.32/x
  3. Step 3: Cross multiply
    256.08x = 352.88 × 178.32
  4. Step 4: Simplify right side
    256.08x = 62,925.56
  5. Step 5: Solve for x
    x = 62,925.56/256.08
  6. Step 6: Final answer
    x = 245.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.