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Finding the Fourth Proportional to 202.39, 303.51 and 72.37

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Solution

The fourth proportional to 202.39, 303.51 and 72.37 is: 108.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.39 : 303.51 = 72.37 : x
  2. Step 2: Convert to fraction form
    202.39/303.51 = 72.37/x
  3. Step 3: Cross multiply
    202.39x = 303.51 × 72.37
  4. Step 4: Simplify right side
    202.39x = 21,965.02
  5. Step 5: Solve for x
    x = 21,965.02/202.39
  6. Step 6: Final answer
    x = 108.53

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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.