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Finding the Fourth Proportional to 202.48, 303.20 and 156.68

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Solution

The fourth proportional to 202.48, 303.20 and 156.68 is: 234.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    202.48 : 303.20 = 156.68 : x
  2. Step 2: Convert to fraction form
    202.48/303.20 = 156.68/x
  3. Step 3: Cross multiply
    202.48x = 303.20 × 156.68
  4. Step 4: Simplify right side
    202.48x = 47,505.38
  5. Step 5: Solve for x
    x = 47,505.38/202.48
  6. Step 6: Final answer
    x = 234.62

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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.