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Finding the Fourth Proportional to 228.28, 315.03 and 130.03

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Solution

The fourth proportional to 228.28, 315.03 and 130.03 is: 179.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.28 : 315.03 = 130.03 : x
  2. Step 2: Convert to fraction form
    228.28/315.03 = 130.03/x
  3. Step 3: Cross multiply
    228.28x = 315.03 × 130.03
  4. Step 4: Simplify right side
    228.28x = 40,963.35
  5. Step 5: Solve for x
    x = 40,963.35/228.28
  6. Step 6: Final answer
    x = 179.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.