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Finding the Fourth Proportional to 445.37, 668.06 and 228.81

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Solution

The fourth proportional to 445.37, 668.06 and 228.81 is: 343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.37 : 668.06 = 228.81 : x
  2. Step 2: Convert to fraction form
    445.37/668.06 = 228.81/x
  3. Step 3: Cross multiply
    445.37x = 668.06 × 228.81
  4. Step 4: Simplify right side
    445.37x = 152,858.81
  5. Step 5: Solve for x
    x = 152,858.81/445.37
  6. Step 6: Final answer
    x = 343.22

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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.