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Finding the Fourth Proportional to 403.66, 557.10 and 226.67

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Solution

The fourth proportional to 403.66, 557.10 and 226.67 is: 312.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.66 : 557.10 = 226.67 : x
  2. Step 2: Convert to fraction form
    403.66/557.10 = 226.67/x
  3. Step 3: Cross multiply
    403.66x = 557.10 × 226.67
  4. Step 4: Simplify right side
    403.66x = 126,277.86
  5. Step 5: Solve for x
    x = 126,277.86/403.66
  6. Step 6: Final answer
    x = 312.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.