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Finding the Fourth Proportional to 228.84, 341.34 and 220.44

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Solution

The fourth proportional to 228.84, 341.34 and 220.44 is: 328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.84 : 341.34 = 220.44 : x
  2. Step 2: Convert to fraction form
    228.84/341.34 = 220.44/x
  3. Step 3: Cross multiply
    228.84x = 341.34 × 220.44
  4. Step 4: Simplify right side
    228.84x = 75,244.99
  5. Step 5: Solve for x
    x = 75,244.99/228.84
  6. Step 6: Final answer
    x = 328.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.