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Finding the Fourth Proportional to 177.92, 245.53 and 111.57

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Solution

The fourth proportional to 177.92, 245.53 and 111.57 is: 153.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.92 : 245.53 = 111.57 : x
  2. Step 2: Convert to fraction form
    177.92/245.53 = 111.57/x
  3. Step 3: Cross multiply
    177.92x = 245.53 × 111.57
  4. Step 4: Simplify right side
    177.92x = 27,393.78
  5. Step 5: Solve for x
    x = 27,393.78/177.92
  6. Step 6: Final answer
    x = 153.97

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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.