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Finding the Fourth Proportional to 177.03, 244.20 and 111.42

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Solution

The fourth proportional to 177.03, 244.20 and 111.42 is: 153.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.03 : 244.20 = 111.42 : x
  2. Step 2: Convert to fraction form
    177.03/244.20 = 111.42/x
  3. Step 3: Cross multiply
    177.03x = 244.20 × 111.42
  4. Step 4: Simplify right side
    177.03x = 27,208.76
  5. Step 5: Solve for x
    x = 27,208.76/177.03
  6. Step 6: Final answer
    x = 153.70

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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.