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Finding the Fourth Proportional to 240.13, 329.20 and 228.39

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Solution

The fourth proportional to 240.13, 329.20 and 228.39 is: 313.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.13 : 329.20 = 228.39 : x
  2. Step 2: Convert to fraction form
    240.13/329.20 = 228.39/x
  3. Step 3: Cross multiply
    240.13x = 329.20 × 228.39
  4. Step 4: Simplify right side
    240.13x = 75,185.99
  5. Step 5: Solve for x
    x = 75,185.99/240.13
  6. Step 6: Final answer
    x = 313.11

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.