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Finding the Fourth Proportional to 263.39, 363.20 and 228.39

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Solution

The fourth proportional to 263.39, 363.20 and 228.39 is: 314.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.39 : 363.20 = 228.39 : x
  2. Step 2: Convert to fraction form
    263.39/363.20 = 228.39/x
  3. Step 3: Cross multiply
    263.39x = 363.20 × 228.39
  4. Step 4: Simplify right side
    263.39x = 82,950.11
  5. Step 5: Solve for x
    x = 82,950.11/263.39
  6. Step 6: Final answer
    x = 314.94

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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.