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Finding the Fourth Proportional to 228.80, 316.13 and 201.13

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Solution

The fourth proportional to 228.80, 316.13 and 201.13 is: 277.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.80 : 316.13 = 201.13 : x
  2. Step 2: Convert to fraction form
    228.80/316.13 = 201.13/x
  3. Step 3: Cross multiply
    228.80x = 316.13 × 201.13
  4. Step 4: Simplify right side
    228.80x = 63,581.43
  5. Step 5: Solve for x
    x = 63,581.43/228.80
  6. Step 6: Final answer
    x = 277.89

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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.