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Finding the Fourth Proportional to 177.44, 244.92 and 115.31

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Solution

The fourth proportional to 177.44, 244.92 and 115.31 is: 159.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.44 : 244.92 = 115.31 : x
  2. Step 2: Convert to fraction form
    177.44/244.92 = 115.31/x
  3. Step 3: Cross multiply
    177.44x = 244.92 × 115.31
  4. Step 4: Simplify right side
    177.44x = 28,240.50
  5. Step 5: Solve for x
    x = 28,240.50/177.44
  6. Step 6: Final answer
    x = 159.16

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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.