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Finding the Fourth Proportional to 202.14, 303.25 and 72.13

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Solution

The fourth proportional to 202.14, 303.25 and 72.13 is: 108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.14 : 303.25 = 72.13 : x
  2. Step 2: Convert to fraction form
    202.14/303.25 = 72.13/x
  3. Step 3: Cross multiply
    202.14x = 303.25 × 72.13
  4. Step 4: Simplify right side
    202.14x = 21,872.75
  5. Step 5: Solve for x
    x = 21,872.75/202.14
  6. Step 6: Final answer
    x = 108.21

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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.