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Finding the Fourth Proportional to 228.28, 341.94 and 147.16

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Solution

The fourth proportional to 228.28, 341.94 and 147.16 is: 220.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.28 : 341.94 = 147.16 : x
  2. Step 2: Convert to fraction form
    228.28/341.94 = 147.16/x
  3. Step 3: Cross multiply
    228.28x = 341.94 × 147.16
  4. Step 4: Simplify right side
    228.28x = 50,319.89
  5. Step 5: Solve for x
    x = 50,319.89/228.28
  6. Step 6: Final answer
    x = 220.43

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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.