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Finding the Fourth Proportional to 177.21, 244.26 and 140.31

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Solution

The fourth proportional to 177.21, 244.26 and 140.31 is: 193.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.21 : 244.26 = 140.31 : x
  2. Step 2: Convert to fraction form
    177.21/244.26 = 140.31/x
  3. Step 3: Cross multiply
    177.21x = 244.26 × 140.31
  4. Step 4: Simplify right side
    177.21x = 34,272.12
  5. Step 5: Solve for x
    x = 34,272.12/177.21
  6. Step 6: Final answer
    x = 193.40

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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.