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Finding the Fourth Proportional to 446.79, 669.60 and 186.48

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Solution

The fourth proportional to 446.79, 669.60 and 186.48 is: 279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    446.79 : 669.60 = 186.48 : x
  2. Step 2: Convert to fraction form
    446.79/669.60 = 186.48/x
  3. Step 3: Cross multiply
    446.79x = 669.60 × 186.48
  4. Step 4: Simplify right side
    446.79x = 124,867.01
  5. Step 5: Solve for x
    x = 124,867.01/446.79
  6. Step 6: Final answer
    x = 279.47

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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.