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Finding the Fourth Proportional to 446.80, 669.64 and 190

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Solution

The fourth proportional to 446.80, 669.64 and 190 is: 284.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.80 : 669.64 = 190 : x
  2. Step 2: Convert to fraction form
    446.80/669.64 = 190/x
  3. Step 3: Cross multiply
    446.80x = 669.64 × 190
  4. Step 4: Simplify right side
    446.80x = 127,231.60
  5. Step 5: Solve for x
    x = 127,231.60/446.80
  6. Step 6: Final answer
    x = 284.76

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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.