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Finding the Fourth Proportional to 498.20, 746.90 and 173.56

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Solution

The fourth proportional to 498.20, 746.90 and 173.56 is: 260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.20 : 746.90 = 173.56 : x
  2. Step 2: Convert to fraction form
    498.20/746.90 = 173.56/x
  3. Step 3: Cross multiply
    498.20x = 746.90 × 173.56
  4. Step 4: Simplify right side
    498.20x = 129,631.96
  5. Step 5: Solve for x
    x = 129,631.96/498.20
  6. Step 6: Final answer
    x = 260.20

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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.