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Finding the Fourth Proportional to 488.38, 732.57 and 199.75

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Solution

The fourth proportional to 488.38, 732.57 and 199.75 is: 299.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.38 : 732.57 = 199.75 : x
  2. Step 2: Convert to fraction form
    488.38/732.57 = 199.75/x
  3. Step 3: Cross multiply
    488.38x = 732.57 × 199.75
  4. Step 4: Simplify right side
    488.38x = 146,330.86
  5. Step 5: Solve for x
    x = 146,330.86/488.38
  6. Step 6: Final answer
    x = 299.63

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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.