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Finding the Fourth Proportional to 498.39, 747.40 and 190.33

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Solution

The fourth proportional to 498.39, 747.40 and 190.33 is: 285.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.39 : 747.40 = 190.33 : x
  2. Step 2: Convert to fraction form
    498.39/747.40 = 190.33/x
  3. Step 3: Cross multiply
    498.39x = 747.40 × 190.33
  4. Step 4: Simplify right side
    498.39x = 142,252.64
  5. Step 5: Solve for x
    x = 142,252.64/498.39
  6. Step 6: Final answer
    x = 285.42

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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.