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Finding the Fourth Proportional to 445.03, 666.96 and 228.76

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Solution

The fourth proportional to 445.03, 666.96 and 228.76 is: 342.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.03 : 666.96 = 228.76 : x
  2. Step 2: Convert to fraction form
    445.03/666.96 = 228.76/x
  3. Step 3: Cross multiply
    445.03x = 666.96 × 228.76
  4. Step 4: Simplify right side
    445.03x = 152,573.77
  5. Step 5: Solve for x
    x = 152,573.77/445.03
  6. Step 6: Final answer
    x = 342.84

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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.