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Finding the Fourth Proportional to 465.44, 698.52 and 209.12

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Solution

The fourth proportional to 465.44, 698.52 and 209.12 is: 313.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    465.44 : 698.52 = 209.12 : x
  2. Step 2: Convert to fraction form
    465.44/698.52 = 209.12/x
  3. Step 3: Cross multiply
    465.44x = 698.52 × 209.12
  4. Step 4: Simplify right side
    465.44x = 146,074.50
  5. Step 5: Solve for x
    x = 146,074.50/465.44
  6. Step 6: Final answer
    x = 313.84

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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.