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Finding the Fourth Proportional to 177.05, 265.33 and 138.36

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Solution

The fourth proportional to 177.05, 265.33 and 138.36 is: 207.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.05 : 265.33 = 138.36 : x
  2. Step 2: Convert to fraction form
    177.05/265.33 = 138.36/x
  3. Step 3: Cross multiply
    177.05x = 265.33 × 138.36
  4. Step 4: Simplify right side
    177.05x = 36,709.96
  5. Step 5: Solve for x
    x = 36,709.96/177.05
  6. Step 6: Final answer
    x = 207.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.