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Finding the Fourth Proportional to 498.05, 746.82 and 189.68

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Solution

The fourth proportional to 498.05, 746.82 and 189.68 is: 284.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.05 : 746.82 = 189.68 : x
  2. Step 2: Convert to fraction form
    498.05/746.82 = 189.68/x
  3. Step 3: Cross multiply
    498.05x = 746.82 × 189.68
  4. Step 4: Simplify right side
    498.05x = 141,653.08
  5. Step 5: Solve for x
    x = 141,653.08/498.05
  6. Step 6: Final answer
    x = 284.42

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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.