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Finding the Fourth Proportional to 178.33, 245.52 and 155.32

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Solution

The fourth proportional to 178.33, 245.52 and 155.32 is: 213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.33 : 245.52 = 155.32 : x
  2. Step 2: Convert to fraction form
    178.33/245.52 = 155.32/x
  3. Step 3: Cross multiply
    178.33x = 245.52 × 155.32
  4. Step 4: Simplify right side
    178.33x = 38,134.05
  5. Step 5: Solve for x
    x = 38,134.05/178.33
  6. Step 6: Final answer
    x = 213.84

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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.