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Finding the Fourth Proportional to 176.31, 264.50 and 80.13

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Solution

The fourth proportional to 176.31, 264.50 and 80.13 is: 120.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.31 : 264.50 = 80.13 : x
  2. Step 2: Convert to fraction form
    176.31/264.50 = 80.13/x
  3. Step 3: Cross multiply
    176.31x = 264.50 × 80.13
  4. Step 4: Simplify right side
    176.31x = 21,194.39
  5. Step 5: Solve for x
    x = 21,194.39/176.31
  6. Step 6: Final answer
    x = 120.21

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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.