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Finding the Fourth Proportional to 161.84, 240.96 and 153.92

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Solution

The fourth proportional to 161.84, 240.96 and 153.92 is: 229.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.84 : 240.96 = 153.92 : x
  2. Step 2: Convert to fraction form
    161.84/240.96 = 153.92/x
  3. Step 3: Cross multiply
    161.84x = 240.96 × 153.92
  4. Step 4: Simplify right side
    161.84x = 37,088.56
  5. Step 5: Solve for x
    x = 37,088.56/161.84
  6. Step 6: Final answer
    x = 229.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.