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Finding the Fourth Proportional to 177.36, 244.76 and 138.48

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Solution

The fourth proportional to 177.36, 244.76 and 138.48 is: 191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.36 : 244.76 = 138.48 : x
  2. Step 2: Convert to fraction form
    177.36/244.76 = 138.48/x
  3. Step 3: Cross multiply
    177.36x = 244.76 × 138.48
  4. Step 4: Simplify right side
    177.36x = 33,894.36
  5. Step 5: Solve for x
    x = 33,894.36/177.36
  6. Step 6: Final answer
    x = 191.10

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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.