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Finding the Fourth Proportional to 242.96, 335.36 and 173.12

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Solution

The fourth proportional to 242.96, 335.36 and 173.12 is: 238.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.96 : 335.36 = 173.12 : x
  2. Step 2: Convert to fraction form
    242.96/335.36 = 173.12/x
  3. Step 3: Cross multiply
    242.96x = 335.36 × 173.12
  4. Step 4: Simplify right side
    242.96x = 58,057.52
  5. Step 5: Solve for x
    x = 58,057.52/242.96
  6. Step 6: Final answer
    x = 238.96

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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.