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Finding the Fourth Proportional to 469.92, 705.04 and 196.16

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Solution

The fourth proportional to 469.92, 705.04 and 196.16 is: 294.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    469.92 : 705.04 = 196.16 : x
  2. Step 2: Convert to fraction form
    469.92/705.04 = 196.16/x
  3. Step 3: Cross multiply
    469.92x = 705.04 × 196.16
  4. Step 4: Simplify right side
    469.92x = 138,300.65
  5. Step 5: Solve for x
    x = 138,300.65/469.92
  6. Step 6: Final answer
    x = 294.31

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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.