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Finding the Fourth Proportional to 446.45, 669.96 and 157.88

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Solution

The fourth proportional to 446.45, 669.96 and 157.88 is: 236.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.45 : 669.96 = 157.88 : x
  2. Step 2: Convert to fraction form
    446.45/669.96 = 157.88/x
  3. Step 3: Cross multiply
    446.45x = 669.96 × 157.88
  4. Step 4: Simplify right side
    446.45x = 105,769.94
  5. Step 5: Solve for x
    x = 105,769.94/446.45
  6. Step 6: Final answer
    x = 236.92

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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.