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Finding the Fourth Proportional to 240.36, 358.11 and 228.12

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Solution

The fourth proportional to 240.36, 358.11 and 228.12 is: 339.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    240.36 : 358.11 = 228.12 : x
  2. Step 2: Convert to fraction form
    240.36/358.11 = 228.12/x
  3. Step 3: Cross multiply
    240.36x = 358.11 × 228.12
  4. Step 4: Simplify right side
    240.36x = 81,692.05
  5. Step 5: Solve for x
    x = 81,692.05/240.36
  6. Step 6: Final answer
    x = 339.87

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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.