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Finding the Fourth Proportional to 228.57, 342.11 and 146.36

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Solution

The fourth proportional to 228.57, 342.11 and 146.36 is: 219.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.57 : 342.11 = 146.36 : x
  2. Step 2: Convert to fraction form
    228.57/342.11 = 146.36/x
  3. Step 3: Cross multiply
    228.57x = 342.11 × 146.36
  4. Step 4: Simplify right side
    228.57x = 50,069.87
  5. Step 5: Solve for x
    x = 50,069.87/228.57
  6. Step 6: Final answer
    x = 219.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.