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Finding the Fourth Proportional to 469.92, 705.12 and 195.96

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Solution

The fourth proportional to 469.92, 705.12 and 195.96 is: 294.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.92 : 705.12 = 195.96 : x
  2. Step 2: Convert to fraction form
    469.92/705.12 = 195.96/x
  3. Step 3: Cross multiply
    469.92x = 705.12 × 195.96
  4. Step 4: Simplify right side
    469.92x = 138,175.32
  5. Step 5: Solve for x
    x = 138,175.32/469.92
  6. Step 6: Final answer
    x = 294.04

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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.