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Finding the Fourth Proportional to 239.84, 331.12 and 162.08

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Solution

The fourth proportional to 239.84, 331.12 and 162.08 is: 223.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    239.84 : 331.12 = 162.08 : x
  2. Step 2: Convert to fraction form
    239.84/331.12 = 162.08/x
  3. Step 3: Cross multiply
    239.84x = 331.12 × 162.08
  4. Step 4: Simplify right side
    239.84x = 53,667.93
  5. Step 5: Solve for x
    x = 53,667.93/239.84
  6. Step 6: Final answer
    x = 223.77

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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.