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Finding the Fourth Proportional to 228.03, 341.78 and 83.63

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Solution

The fourth proportional to 228.03, 341.78 and 83.63 is: 125.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.03 : 341.78 = 83.63 : x
  2. Step 2: Convert to fraction form
    228.03/341.78 = 83.63/x
  3. Step 3: Cross multiply
    228.03x = 341.78 × 83.63
  4. Step 4: Simplify right side
    228.03x = 28,580.93
  5. Step 5: Solve for x
    x = 28,580.93/228.03
  6. Step 6: Final answer
    x = 125.34

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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.