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Finding the Fourth Proportional to 498.57, 747.83 and 190.57

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Solution

The fourth proportional to 498.57, 747.83 and 190.57 is: 285.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.57 : 747.83 = 190.57 : x
  2. Step 2: Convert to fraction form
    498.57/747.83 = 190.57/x
  3. Step 3: Cross multiply
    498.57x = 747.83 × 190.57
  4. Step 4: Simplify right side
    498.57x = 142,512.57
  5. Step 5: Solve for x
    x = 142,512.57/498.57
  6. Step 6: Final answer
    x = 285.84

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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.